Ultra-Thin Slide-out Wireless Keyboard for iPhone 4 with Bluetooth 

1)Especially designed for your 4G.

2)Bluetooth Wireless Mini Keyboard.

3)Ergonomic design.

4)Comfortable and mute to type.

5)Just plug and play, easy connection.

6)Built-in Li-ion battery, extremely long standby time.

7)Ultra thin, lightweight and compact design.

8)A hole left for your iPhone's camera.

9)Your iPhone and keyboard can put into this plastic case.

10)Bluetooth: Version 2.0 class 2

11)Range of frequency:2.4GHz spectrum

12)Operating voltage:3.7V dc(powered by li-ion)

13)Standby current: 1.2mA

14)Operation current: less than 5mA

15)Sleep current:  less than 0.7mA

16)For the first time user,please charge the keyboard for at least 6 hours before using it.Thereafter,charge for at least 2 hours when the battery runs low.

17)Power: connection USB charging cable