It doesn't hold any additional battery power, though, but does easily attaches
via the magnetic clips, holds firmly into place and even has backlighting to make typing in the dark all the easier.
The colored leather is a large top flap that secures
via magnetic clips on the front of the case.
Sporting a wireless Bluetooth keyboard that connects to your new iPad (or iPad 2)
via a magnetic clip, the aluminium cover also protects your Apple tablet screen and has built in stand, so you can type from all angles.
Not exact matches
Not to be defeated by a case, I came across this accessory
via the CrackBerry Forums — Spigen
Magnetic Clip.
They also boast enhanced battery life and automatic pairing
via a convenient
magnetic clipping mechanism.