•Color: gloss black, white, matt blue, matt green

•Capacity:2000mAh (Li polymer battery Lithium-ion)

•Output voltage/ current :DC5V/700mA

•Charging time:3-4hours

•Cycle life:more than 500times

•Using Temperature:-10°C~ +40°C

•Storage Temperature:-20°C~ +50°C

•Remark:gloss items sprayed UV glossy oil(protecting scratched);matt items sprayed rubber oil(protecting slip)

•Enhance iPhone4 signal

•Power check & indication

•Power switch

•Protective and powerful

•Standby time-up to 230 hours

•Talk time-up to 6 hours on 3G & up to 14 hours on 2G

•Internet Use-up to 5.5 hours on 3G&up to 8 hours on Wi-Fi

•Audio Playback-Up to 30 hours

•Video Playback-Up tp 8 hours