It's a little different from sku10287, the keyboard is worse than that one, so please choose what you need..

This Bluetooth Sliding Keyboard Case for Apple iPhone 4 frees you from the pains of having to use an on-screen keyboard, It pairs over bluetooth using wireless connectivity and features a slide-out keyboard that includes Home and Search buttons. It's powered by a lithium rechargable battery and is charged via its USB mini B port. Its on/off switch lets you conserve its battery life, too! Simply snap in your iPhone 4 (AT&T or Verizon), pair your devices, and you've got a fully functional keyboard ready to slide out whenever you need it!

General Features:
Rubberized hard shell case
Sliding QWERTY keyboard
Bluetooth wireless connectivity
Fits AT&T and Verizon iPhone 4
Specialized keys for iPhone
Home button
Search button
Show/hide on-screen keyboard
Built-in rechargable Lithium battery
Charges over USB interface

Physical Features:
On/off switch
Micro usb port

Power Specifications:
Battery type: Lithium
Capacity: 200 mAh
Operating current: 3 mAh
Standby current: 0.2 mAh
Operating voltage: 3.7V
Charge time: 4 hours
Standby time: 45 days

Product weight: 82g
Product size: 118 x 60 x 18mm
Package size: 139 x 152 x 30mm
Package weight: 238g

iphone 4 covers