wireless bluetooth slide keyboard introduction:

Especially designed for your iPhone 4. 
Bluetooth Wireless Mini Keyboard. 
Comfortable and mute to type. 
Just plug and play, easy connection. 
Built-in Li-ion battery, extremely long standby time. 
Ultra thin, lightweight and compact design. 
Operation Current: 3mAh
Satandby Current: 0.2mAh
Operation Voltage: 3.7V
Charging Voltage: 110-240V
Battey Type: 180mAh Lithium Battery
Charging period: 4hours (for the first time, please charge for 12 hours)
Duration of Charged battery: 45 days
Keyboard: 51 keys
Color: Black/
Keyboard size: 118*62*19 mm
Case size: 130*75*50 mm
keyboard weight: 80g
Case weight: 220g
50pcs/ctn 50cm*39cm*28cm   GW:15KG