Makita is one of many power tool manufacturers using cordless technology powered by lithium-ion batteries. You can find a Makita electric tools, with what is now considered to be low voltage, measuring voltage of 9.6 v in the pendulum. However, if you are considering buying new power tool, cordless power tools, considering the high voltage tools, have more power, weight in Makita 18 volt power tool battery .

battery

Makita 18 volt power tools using lithium-ion (li-ion) battery power and nickel cadmium (Ni-Cd). Lithium as a conductor is one of the advantages of its light and superior electrochemical potential. The lithium ion power tool battery to provide "the biggest weight energy density", this is almost the traditional nickel cadmium battery two times. In order to extend battery life, store all package only after you've full charge of the battery. Otherwise, storage discharge battery may cause it gradually lose its voltage.

MAKITA BL 1830 18V Power Tool Battery

Chemistry : Li-ion
Rating : 3500mAh, 18V
Color : Black
Net Weight : 643.45g
Dimension : 114.80x74.55x65.20mm
Makita 18V BL 1830 power tool battery Shop: http://www.sales-batteries.com/makita-bl-1830.htm

Power tool

Makita fit 9.6 v power tool battery power production of several tools. Tools and kit, including rechargeable flashlight, reciprocating saw, saw, electric drill driver. The flashlight can provide lighting for up to two hours of continuous light, it has a swivel head Angle lighting. Reciprocating saw, weighs 3.1 pounds, can reduce timber and low carbon steel. It has a 2700 SPM (every minutes rod) speed. Circular saw weight for 4 pounds and function in 90 degrees and 45 degrees of adjustable cutting depth 8 inches blade, it can reduce the slope Angle of up to 45 degrees

Electric drill voltage matters,

Cordless Drill Review suggest using 18 v and 12 v low voltage exercise, is mainly used for drilling and driving to the wood screws, installation house decoration and assembly the furniture and electrical appliances. For the average family maintenance and construction, the survey to buy a higher voltage drill. However, animal husbandry field electric drill is "the world's most popular exercise, said:" CordlessDrillReview. 18 volt  electric drill are JD Power&Associates "excellent" strength and speed level.

Impact driver

The influence of 18 volt  power tool battery can provide up to 2200 RPM (RPM) and to 2800 IPM (every minutes effect), and used the 1/4 inch hexagonal a rapidly changing a piece of retained system. The influence of the drive maximum rated torque measuring 608 inches pounds 2.9 pounds. If you need high power work, animal husbandry field, to make all kinds of other influence range from 7.2 v to 18 v

Dell recently unveiled its new model Inspiron 14z during IFA 2011 event, this is a device designed to be a very portable notebook plus all the power possible. The company Dell is undoubtedly now one of the three most prestigious in the world, their computers not only attractive design but we have Dell ww116 of the highest quality as well as powerful hardware as well as high quality, and without 14z doubt that the model is a clear example of this.

This is the successor to the Inspiron 15z model and has a slim design resembling that of an inch MacBook Pro to be less than the product of the former company of Steve Jobs. Maybe an inch in other products may not be much but if we are dealing with a Fujitsu fpcbp200 that must be lightweight and portable no doubt that inch makes a big difference in the market. Or in this case is perfectly to the view that while we gain we lose power for their portability and vice versa.

The Inspiron 14z has a screen with a display type, high-definition widescreen resolution of 1366 x 768 pixels. This feature is the same that is present in the model Inspiron 15z but 14z Inspiron options are a bit limited when Fujitsu fpcbp59 comes to processors. Here you can choose between an  Intel Core i3 or i5 while the Dell Inspiron 15z is possible to choose between an Intel Core i7 i5.

For its part the operating system and comes pre-installed is Windows 7, but the most interesting of this notebook is that we will be able to customize it to our needs. For example at maximum capacity we have an 8 GB RAM and a HDD of 750 GB, thus having a wide range for our work are powerful or simply to display Fujitsu fpcbp80. With this customization we can have a perfect device to work well in a video editing as a simple Web browsing and reading emails.

This model also features an HDMI port and has the HD trailer SRS Premium Sound, this is a high quality audio for movies or listen to our songs. Besides all this we will be able to convey the image of our computer screens without requiring cables over all by the use Intel Wireless Display. The Dell Inspiron 14z also has a Dell Inspiron 14z battery and memory card port and WiFi multimedia, USB 3.0 and Bluetooth.

For his part in terms of aesthetics Dell also has not neglected its quality and gives us the choice between two colors, so we have the Black Diamond or Red. The notebook will start this month and be sold in stores such as Best Buy in the UK. Dell wants to start a major expansion in the field of technology with hp 520 battery that are more palatable to the user providing both great mobility and versatility, so in recent years Dell has hired several new designs well known in the segment.

Mobile phones, laptop computers, digital cameras and camcorders and other electronic products, getting into people's life and work. In these high-tech consumer products, both from a technical point of view or from the assessment of price considerations, the battery is a very important position. Until now, the market is selling the majority of electronic products, used in batteries have basically completed the battery from nickel to lithium transition. Therefore, to understand that lithium knowledge and master the proper use of lithium batteries is necessary.

So how do you distinguish between true and false lithium batteries it? Conditions in the non-professional, you can use the following methods: equal-capacity battery, lithium battery than the nickel-metal hydride and nickel cadmium batteries to light touch; with a lithium battery charger for charging the battery, the battery charging process if the heat is is a nickel-metal hydride, nickel cadmium batteries, if no major changes in temperature, the lithium battery; the battery positive and negative moments after short use, such as the battery is a lithium battery is dead, if there is a power of nickel metal hydride and nickel cadmium batteries. Also everyone in the optional battery, the need to observe the following points: 1, capacity: no clearly marked capacity (such as 1000mAh or 1000 milliampere hour) battery, most likely is the use of low-quality batteries or recycle batteries, the battery the price is cheap, but life is short, inconsistent quality, careless use may damage the electronics! In addition, too light heart inadequate capacity lithium battery means, for example as a 900mAh Li-ion battery weight of less than 30g, Fengyun likely to have a problem battery! 2, Standby time: in the phone standby time of the battery into the phone to the next charge, after continuous use. Unstable because of the quality of the relationship between the battery, the battery generally can not be commercially available to customers to ensure that the standby time. 3, safety protection circuit board: No protection circuit board, the lithium fear deformation, leakage, risk of explosion! 4, a single block of lithium-ion battery voltage typically 3.6V or 3.7V, so if the charger is displayed as 5V, it is certainly a problem.

In addition, buy a good quality lithium batteries, the need to use it correctly can extend the service life.

In the use of lithium batteries should be noted that:

1, how the new battery? After a period of time the battery is placed into hibernation, lower than normal capacity at this time, the use of time has also come to shorten. After a 3-5 charge to activate the battery back to normal capacity. Because lithium own characteristics, its decision is almost no memory effect, so the new lithium battery in the activation process does not require special methods and equipment. Charging the best time and in accordance with standard method of charging standards, in particular for not more than 12 hours of super-long charge.

2, normal use should be when to start charging? According to lithium-ion battery charge and discharge cycle test table: cycle life (10% DOD):> 1000 times, cycle life (100% DOD):> 200 times (DOD: depth of discharge abbreviation.) Therefore not suitable for over-discharge lithium batteries, it is best when there is a certain electricity in time charge the battery to avoid battery discharge due to excessive damage caused by low voltage batteries.

3, when the battery is inadvertently short-circuit protection circuit will cut off the internal lithium battery power supply circuit to ensure the safety of users will be able to restore the battery out to recharge. Best buy lithium batteries, should choose a service, international, national identity, brand batteries, such batteries using high quality raw materials, with perfect protection circuit, housing beautiful, wearable, with security chip, and with the electronic products with good can achieve good communication results.

Canon PowerShot SX130 IS Key specs:
 
Dimensions (WHD): 4.5 x 2.9 x 1.8 inches
Weight (with battery and media): 10.9 ounces
Megapixels, image sensor size, type: 12 megapixels, 1/2.3-inch CCD
LCD size, resolution/viewfinder: 3-inch LCD, 230K dots/None
Lens (zoom, aperture, focal length): 12x, f3.4-5.6, 28-336mm (35mm equivalent)
File format (still/video): JPEG/H.264 (.MOV)
Highest resolution size (still/video): 4,000x3,000 pixels/ 1,280x720 at 30fps
Image stabilization type: Optical and digital
Battery type, CIPA rated life: AA Batteries (2 rechargeable AA batteries included), 130 shots
Storage media: SD/SDHC/SDXC, MultiMediaCard, MMCplus, HC MMCplus cards
Bundled software: ZoomBrowser EX 6.5/PhotoStitch 3.1 (Windows); ImageBrowser 6.5/PhotoStitch 3.2 (Mac)

The Canon PowerShot SX130 IS is a travel-zoom camera on a budget, offering enough features, performance and image quality to appeal to both beginners and serious photographers alike. It also addresses most of the concerns that we had about its predecessor and maintains an attractively competitive price, although the design is starting to look a little dated.

Outwardly virtually identical to its year-old predecessor, the SX130 IS is actually slightly cheaper than the previous model (in the UK at least) whilst offering a few significant improvements, most notably a 28mm wide-angle zoom that's much quieter than the SX120 IS, 720p video mode with stereo sound and full use of the 12x zoom (albeit at a glacial pace), easy operation for the inexperienced, and manual modes for those looking for a pocketable alternative to a DSLR.

The only areas of concern that haven't been addressed are the noisy images if you stray above ISO 400, perhaps forgivable given the increase from 10 to 12 megapixels, the tendency to eat up alkaline AAs in a couple of afternoons of shooting (make sure to use high-powered NiMHs), the slightly slower lens in terms of maximum apertures, and the low-resolution 230k dot 3 inch LCD which seems under-specified in 2010.

So the Canon PowerShot SX130 IS may not have all the bells and whistles, styling or cutting edge features of competitive models, but it undoubtedly offers fantastic value for money for such a big-brand camera, and is easily worthy of our Recommended award.

Canon Powershot SX130 IS: Features
It’s all about the family with the new Canon Powershot SX130 IS, which replaces the SX120 in the line up. Whether it’s face detection and tracking, blink detection and red-eye removal for families, the 12x superzoom for holidays, or the 28mm wide angle for scenes on days out, ease of use and practicality are the mantras that Canon is chanting over the SX130's curvaceous shape. In fact there’s a bit of everything in here, from the 12Mp resolution and DIGIC 4 image processing system, to the HD-movie. With a 12x optical zoom from the pleasing 28mm wide angle up to the 336mm equivalent reach at the end it’s also a relief to know that there is hardware based shift stabilisation in the lens to help with shake. While the SX130 can be used as a straightforward point and shoot, it also comes with some manual control in the form of aperture priority, shutter priority, manual and program options, as well as a number of scene modes. These include the miniature effect that’s been all the rage, plus a dubious fish-eye effect. Of more value, and quite astonishing given the length of the zoom, is the macro mode that reckons you can get as close as 1cm to the subject.

Canon Powershot SX130 IS: Performance
There’s a number of interesting facets to the performance of the SX130, starting with the metering. There’s the usual trio of evaluative, centre-weighted and spot. The evaluative, or zone, can be left to its own devices, or tied in to the face detection mode, so that it’s a kind of super-centre-weighted option. However, in practice, even with this turned off, you only need to move the central focus area a little to get totally different readings in evaluative mode, showing that it actually is centre-weighted and a bit metering, not strictly zone metering at all. In terms of image consideration, there’s a healthy regard for the sky, even on backlit subjects, so that the foreground becomes darker. One of the reasons for that is the firmware now contains shadow enhancement technology, so the shadows can be boosted anyway. However, when you get those dread bright cloudy skies, then the camera will give you an exposure for the landscape. For hue and tone I don’t think anyone can have any complaints. Everything is nicely saturated, from healthy skin tones, to blue skies, to radiant vegetation. Even the subtle tones of pale lilacs and whites in flowers are faithfully reproduced. Basically, you’ve got colours that you can print straight out of the camera.

As the family is a key target here, there’s a raft of features like face detection and tracking that ties in with the focussing system. It has red-eye removal and anti-blinking detection. Well, the face detection works quite well, it picks people up and follows them around but it can get stuck in places. The blink detection is more hit and miss. Also, the focussing is fine for a compact and there’s two further options beyond the straightforward focus and lock option. One is that with a half-press of the fire button the focus can be set to continuous at that point – useful for tracking things. The other is that the focus can be set to continuous all the time. This is not recommended, for two reasons. One is that it will re-meter each time where you might not want it to, the other is that it drains the battery. Speaking of which, the SX130 takes either two AAs or the Canon NB-3AH battery pack. Now two batteries is not a lot of power and while Canon might claim 130 typical shots the reality is more like 50-60 of average use with Duracell AAs.

The PowerShot SX130 IS is one of Canon's three compact megazooms for 2010. It shares some of the same features as its linemate, the SX210 IS, mainly semimanual and manual shooting modes and 720p HD movie capture. However, that model has a longer, 14x zoom lens and a 14-megapixel CCD sensor to the SX130's 12x zoom and 12-megapixel CCD sensor. Then there's the PowerShot SD4500 IS, which is part of Canon's Digital Elph line and features a 10x zoom and a 10-megapixel CMOS sensor. Despite having the midrange specs of the three, the SX130 IS is the most basic and lowest priced. It's also a very good camera for those wanting more creative control than just about any competing model will give you and excellent photo quality for its class. Its shooting performance is the only thing that's lackluster here, but it's still on par with similarly priced models.

The SX130's design is basically unchanged from its predecessor, the SX120 IS. There are a couple styling changes, including a better front grip, and it now has stereo mics in front above the longer, wider lens, but it's still bulky and heavy, especially in comparison with competing compact megazooms. Part of the reason for its heft and dimensions is that it uses two AA-size batteries for power while other manufacturers have moved to rechargeable packs. Battery life is relatively short if you use alkaline batteries, though. You'll want to pick up some rechargeable NiMH batteries, which will triple the shot count from alkaline.

The controls on the back are pretty much the same as those on the SX120 IS, though the Playback button is now to the right of the thumbrest instead of the left. Face detection, display, menu, and exposure compensation buttons are above and below the navigational scroll wheel to the right of the 3-inch LCD. The screen gets adequately bright, though some may still find it difficult to see in direct sunlight. The navigational wheel surrounds a Func./Set button and has top, bottom, left, and right pressure points for ISO sensitivity, focus (manual, normal, and macro), flash, and timer. The wheel is responsive with tactile stops to it, so you will not easily overshoot what you're trying to select. Operation is overall easy to pick up, but even seasoned Canon users will want to examine the full manual included on the software disc bundled with the camera.

The batteries and memory card slot are in a compartment accessed through the bottom of the camera, secured by a locking door. That's good considering there's nothing holding the batteries in place. On the right side of the body under a small door is a USB/AV port for connecting to a computer or external display and a DC input if you want to power the camera with an optional adapter.

If you're looking for a wide variety of shooting options, the SX130 IS will likely have plenty for you to experiment with. Among the many modes are shutter-priority, aperture-priority, and manual options. Available apertures include: f3.4, f4.0, f4.5, f5.0, f5.6, f6.3, f7.1, and f8.0. Availability is dependent on zoom position, though you do get the full range at the wide end. Shutter speeds go from 15 seconds down to 1/2,500 second, which is a better range than most cameras in this class offer.

For the SX130, Canon throws three of the more common scene-shooting modes (Portrait, Landscape, and Kids & Pets) on the actual Mode dial and keeps more specialized scene types (Low Light, Snow, Fireworks, Foliage, and Beach) under an SCN spot on the dial. Under SCN, too, are Canon's creative shooting modes like Color Swap, Color Accent, Miniature Effect, Fisheye Effect, and Super Vivid as well as its Smart Shutter option, which features a smile-activated shutter release in addition to Wink and Face Detection self-timers. Wink allows you to set off the shutter simply by winking at the camera and the Face Detection option will wait till the camera detects a new face in front of the camera before it fires off a shot. Both work well.

On the dial you'll also find Canon's reliable Smart Auto, which analyzes your subject and automatically selects an appropriate scene setting from 28 specially defined settings; an Easy mode for fully automatic shooting with no access to menus whatsoever; and a Movie mode for capturing clips at resolutions up to 720p HD and offering the ability to shoot using Color Swap, Color Accent, and Miniature Effect modes.

Shooting performance is fairly slow, which sadly is average for its class. From off to first shot takes about 2 seconds. The shot-to-shot times averaged 3 seconds without the flash while using the flash doubles that wait time. Shutter lag--the time from when the shutter release is pressed to when the image is captured--is a minimum of 0.6 second in bright lighting. Thankfully, it only jumps to 0.8 second in low light, but occasionally it felt longer. There are two main continuous shooting options: one with autofocus on every shot and one that sets focus and exposure with the first shot. The latter is faster, capturing at about 1 frame per second. The continuous option with AF slows down to about 0.6fps. Add in the shutter lag for the first shot and you'll have to be pretty good at anticipating action to get the shot you want.

The SX130 takes excellent photos for its class, though like most compact cameras, it's at its best below ISO 200. At ISO 400 there's a noticeable increase in noise and softness from noise reduction. Fine details can still be seen at full size right up to ISO 1,600, making photos usable at smaller sizes. The increased noise at ISO 1,600 does, however, cause some faint yellow blotching.

Colors produced by the SX130 are generally excellent--bright, vivid, and fairly accurate in our lab tests. They lose some saturation at ISO 800 and above, but not nearly as much as I've seen on competing cameras. Exposure and white balance are very good.

Canon keeps the barrel distortion in check with this wide-angle lens; there is some, but it's a livable amount. When fully extended, the lens exhibits nearly undetectable pincushioning, but not enough to be concerned with. Center sharpness is very good, and the lens stays consistent out to the sides and corners. It doesn't appear that Canon does much to help remove or reduce fringing in high-contrast areas of photos. Most megazoom cameras produce a lot of fringing, so it's not a surprise to see it from the SX130. You'll see it in larger prints or if you crop heavily. If you're able to look past it, generally don't view your photos at full size, or don't mind removing it with photo-editing software, then it's a nonissue.

Video quality is on par with an HD pocket video camera. It's not stellar and won't replace a full-size camcorder, but is certainly good enough for Web use or casual viewing on an HDTV. You do get use of the optical zoom while recording and the lens movement is very quiet so it doesn't get picked up by the stereo mic.

Last year's SX120 IS was a decent compact megazoom, but it had fewer features, slower performance, and a bulkier design than competing models. The Canon PowerShot SX130 IS catches up to the pack in features and is one, if not the only, readily available compact megazoom that takes AA-size batteries and has semimanual and manual shooting modes. Combined with a good price and excellent photo quality, it's definitely a front-runner in its class. The slow performance is the only significant thing that tarnishes the package.

More powerful than the entry-level MacBook and more portable than Apple’s 15- and 17-inch laptops, the 13-inch MacBook Pro is ideal for students and travellers. Its mid-2010 update isn’t as radical as that enjoyed by the bigger MacBook Pros, like the 15inch version we reviewed here, but its faster processors and better graphics chip are still very welcome.

The two new 13-inch MacBook Pros feature 2.4GHz and 2.66GHz Intel Core 2 Duo processors, up from 2.26GHz and 2.53GHz respectively, with 4GB RAM. While this speed increase can only be a good thing, we have to wonder why Apple is sticking with the Core 2 Duo instead of going for a Core i3 or even a low-end Core i5, taking the entire MacBook Pro range over to the new CPUs. Using a Core 2 Duo as the rest of the MacBook Pro range moves to the Core-i chips makes the 13-inch model look a little dated.

Design
The 13-inch MacBook Pro looks identical to last season’s MacBook Pro: the aluminum chassis, black island-style keyboard, large multitouch touchpad, and thin, rounded lid all look familiar. Even its weight (4.4 pounds) and dimensions (12.8 x 8.9 x 1 inches) remain the same, making this notebook a cinch to carry. The ASUS U30Jc-1A, another 13-inch thin-and-light with powerful graphics, weighs almost half a pound more.

Like its predecessor, the 13-inch MacBook Pro is made from a single, seamless piece of aluminum, which means it’s more durable than most other notebooks in this price range. The only difference is that the battery is now non-removable (more on that later). Our only gripe is that the system’s body scuffs fairly easily, so you may want to invest in a custom-fit cover.

Performance
While it doesn’t use one of Intel’s latest Core i3 or i5 processors, the MacBook Pro has been updated with a 2.4-GHz Intel Core 2 Duo P8600 and 4GB of RAM, a modest upgrade from the previous generation’s 2.26-GHz Intel Core 2 Duo P7550 CPU and 2GB of RAM. Not surprisingly, we saw an improvement in our benchmark tests. In PCMark Vantage, the MBP scored 4,164, an increase of 957 from the last generation. That score is also 645 points above the thin-and-light average, but about 800 points less than the Sony VAIO S (which has a 2.26-GHz Intel Core i5 i5-430M CPU) and 1,170 points below the ASUS U30JC-1A, which uses a 2.26-GHz Intel Core i3 350M processor.

Like the older MacBook Pro, the current version launched into Snow Leopard in a fast 37 seconds, 20 seconds faster than the thin-and-light average, which is mainly made up of Windows PCs. The speed of the 250GB, 5,400-rpm hard drive is also much better; when we duplicated a 4.97GB folder of multimedia files, the MacBook Pro took just 2 minutes and 55 seconds, a rate of 29.1 MBps; that’s about 7 MBps faster than both the previous generation and the thin-and-light average. But you only see this advantage in Apple’s OS: when we performed the same test in Vista using Boot Camp, the MacBook Pro’s transfer rate dropped precipitously to 18.4 MBps.

The MacBook Pro took 1 minute and 15 seconds to transcode a 5:05 MPEG-4 clip to AVI using Oxelon Media Encoder in Windows; the average thin-and-light takes 1:09; that difference isn’t surprising given the Mac’s older processor.

Battery Life and Wi-Fi
We were pleased that the previous 13-inch MacBook Pro saw 6 hours and 13 minutes on our LAPTOP Battery Test (web surfing via Wi-Fi), so we were more than happy to see the newest version reach 7:48 on the same test. Not only is that 3 hours longer than the thin-and-light laptop average, it’s more than 40 minutes longer than the U30Jc. The Alienware M11x got 7:14 on the test, but that was using its integrated GPU.

Apple claims the 13-inch MacBook Pro’s lithium polymer battery will last for 1,000 charges (about three years, depending on usage). Replacing the battery costs $129, and requires you to either take the notebook to the Genius Bar at your local Apple store, or mail it in for replacement. While three years may be longer than you’re likely to own the notebook, this potential inconvenience might be a turn-off for some buyers.

The Broadcom 802.11n Wi-Fi radio in the MacBook Pro delivered decent, but not spectacular throughput; we wonder if the all-metal case impedes performance. At 15 feet from our router, the Pro averaged 26.4 Mbps, which is about 3 Mbps faster than the category average, but well below the U30Jc (39.8 Mbps). At 50 feet, the Pro’s throughput of 17.5 Mbps was nearly identical to the average, and still lower than the U30Jc (21.4 Mbps), though not by much.

Product Features and Technical Details
Product Features
Processor clock speed: 2400 MHz
Processor family: Intel Core 2 Duo
Total storage capacity: 250 GB
13-inch 2.4GHz MacBook with Intel Core 2 Duo processor and 4GB Memory
250GB hard drive
One FireWire 800 port (up to 800 Mbps), two USB 2.0 ports (up to 480 Mbps), SD card slot
Built-in 63.5-watt-hour lithium apple laptop battery (up to 10 hrs wireless productivity)
NVIDIA GeForce 320M graphics
Technical Details

Model number: (MC374*/A)
Enclosure: Precision aluminium unibody
Processor: 2.4GHz Intel Core 2 Duo
L2 cache: 3MB shared
System bus:Memory: 4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM; supports up to 8GB
Hard drive: 250GB Serial ATA; 5400 rpm
Slot-loading optical drive: 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
Software: Mac OS X v10.6 Snow Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard, Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer Tools)
Additional software: iLife (includes iPhoto, iMovie, iDVD, iWeb, GarageBand)
Graphics: NVIDIA GeForce 320M graphics processor with 256MB of DDR3 SDRAM shared with main memory
Video: iSight camera; Mini DisplayPort output port with support for DVI, VGA, dual-link DVI and HDMI (requires adaptors, sold separately)
Display: 13.3-inch (diagonal) LED-backlit glossy widescreen display, 1280x800 resolution
Height: 2.41 cm (0.95 inch)
Width: 32.5 cm (12.78 inches)
Depth: 22.7 cm (8.94 inches)
Weight: 2.04 kg (4.5 pounds)
Line voltage: 100V to 240V AC
Frequency: 50Hz to 60Hz
Operating temperature: 10° to 35° C (50° to 95° F)
Storage temperature: -24° to 45° C (-13° to 113° F)
Relative humidity:0% to 90% noncondensing
Maximum operating altitude: 3,000 m (10,000 feet)
Maximum storage altitude: 4,500 m (15,000 feet)
Maximum shipping altitude: 10,500 m (35,000 feet)
Expansion: One FireWire 800 port (up to 800 Mbps), two USB 2.0 ports (up to 480 Mbps), SD card slot
Audio: Stereo speakers with subwoofers, omnidirectional microphone, combined headphone/line in (supports digital output)
Networking: 10/100/1000BASE-T (Gigabit) Ethernet
Wireless: AirPort Extreme Wi-Fi (based on IEEE 802.11n specification)2; Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology
Hardware accessories: 60W MagSafe Power Adaptor, AC wall plug, power cord
Limited warranty and service: 90 days of free telephone support (0844 209 0611) and a one-year limited warranty.