iPad 2

The iPad 2 is the second generation of the iPad, a tablet computer designed, developed and marketed by Apple Inc. It serves primarily as a platform for audio-visual media including books, periodicals, movies, music, games and web content, and is available in black or white. The Foxconn-manufactured iPad 2 has a lithium-polymer battery that lasts up to 10 hours, a new dual core Apple A5 processor and VGA front-facing and 720p rear-facing cameras designed for FaceTime video calling.

Audio: The iPad can play audio in mono using its built in speaker. Its frequency response ranges from 20 Hz to 20,000 Hz. If attached to the Apple Digital AV Adapter, it can output Dolby Digital stereo or even 5.1 surround sound.

Screen and input: There are four physical switches on the iPad 2 (same as 1st generation iPad), including a home button near the display that returns the user to the main menu, and three plastic physical switches on the sides: wake/sleep and volume up/down, plus a third which, for either screen rotation lock or mute. Business Insider states that the home button on the iPad 2 is "easier to double tap" than the previous generation of the iPad.

Apple has reduced the size of the iPad by eliminating the stamped sheet metal frame from the display, integrating new thinner glass technology for the touch screen overlay, and slightly reducing the space between the display and battery. The iPad 2's screen is thinner, lighter, and yet stronger than the original iPad's

Power: The iPad has a 25 watt-hour rechargeable lithium-polymer battery that lasts 10 hours, like the original iPad. It is charged via USB or included 10-watt, 2-amp power adapter. The battery is 2.5 mm thick, 59% smaller than the original and has three cells instead of two. The improvements allowed the injection-molded plastic support frame to be omitted. The 10W USB power adapter provides 4x the power of a conventional USB port.

Cameras: The revised tablet adds front- and rear-facing cameras, which allow FaceTime video calls with the iPhone 4, fourth-generation iPod Touch and Macintosh computers (running Mac OS X 10.6.6 or later with a webcam). The 0.3MP front camera shoots VGA-quality 30 fps video and VGA-quality still photos. The 0.7MP back camera can shoot 720p HD video at 30 fps and has a 5x digital zoom. Both shoot photo in a 4:3 fullscreen aspect ratio. The rear camera shoots video in 16:9 widescreen to match the 720p standard, although only the central 4:3 part of the recording is shown on the screen during recording. The forward facing camera shoots in 26:13.

Apple A5 processor: The iPad 2 added a dual core Apple A5 processor that Apple claims doubles processing speed and has graphics processing that is up to nine times faster than the previous iPad.

iPad with 3G: 3G versions of the iPad 2 offer CDMA2000 support for customers using the device on a CDMA network (e.g. Verizon Wireless in the United States) or GSM/UMTS support for customers using the device on a GSM/UMTS network (e.g, AT&T Mobility in the United States or Orange in Europe). [30]

The iPad Wi-Fi + 3G model includes an A-GPS receiver for tracking the user's location given permission. Also, the iPad 2 3G model includes a plastic cap-like band at the top on the back for the 3G antenna. The metallic grille for the microphone is replaced with a matching plastic black grille on the 3G model.

Size and weight: The device is 33% thinner than the original iPad, is thinner than the iPhone 4 by 0.5mm, and is 15% lighter than the original iPad.
The Wi-Fi version is 1.33 lb (600 g). Both the GSM and CDMA versions (known respectively as the AT&T and Verizon versions in the US) differ in weight slightly due to the mass difference between the GSM and CDMA cellular radios, with the GSM model at 1.35 lb (612 g) and the CDMA model at 1.34 lb (608 g). The size of the iPad 2 is also less than the original iPad at only 9.5×7.31×.346 in (240×186×8.8 mm), compared to the original iPad's size at 9.56×7.47×.528 in (243×190×13.4 mm).