This USB power bank is portable and lightweight mobile power pack for iPhone 4/3GS iPod

Specifications -mobile power pack for iPhone 4,3GS -1900mAh capacity - Type: Lithium-ion polymer battery -smart protection

mobile power pack for iPhone 4/3GS iPod

Rechargeable Lithium-ion polymer batteryTalk Time:Up to additional 6 hours (3G network) Up to additional 12 hours (2G network)Internet Use:Up to additional 6 hours (3G) Up to additional 7 hours (Wi-Fi)Standy Time: up to additional 380 hoursAudio Playback: up to additional 28 hoursVideo Playback: up to additional 8 hours

 Specification

Product dimension67*62*15 (mm)

Weight:65gCapacity: 1900mAhRechargeable Lithium-ion polymer batteryOutput voltage: 5VOutput current: 500mACycle life: 500 times