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

Product Size:11.3*6.6*2.1cm

Capacity of Polymer Lithium-ion battery:1800mAh

Output voltage/current: DC5V,500mA

Iutput voltage/current: DC5V,500mA

Charging time:4-6 hours

Cycle time:more than 500 times

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

Signature:Standby time-up to additional 380 hours

Talk time:up to additional 6 hours (3G Network)

up to additional 12 hours (2G Network)

Internet Use:up to 6 hours on 3G&up to 7 hours on Wi-Fi

Audio Playback:up to 28 hours

Video Playback:up tp 8 hours