Features:
Stylish and exquisite appearance design, the body is coated by rubber.
High bass stereo speaker for better performance in playing & speaking, it can charge for iPhone4/4S anytime.
High performance in charging: 1800mAh power capacity available, it just need 80 minutes to be full charged.
Keeping iPhone connector, it can charge for iPhone 4/4S and the battery case at the same time.
No need for unlock or jailbreak, it is easy to operate.
Suitable for iPhone 4 and iPhone 4S.

Specifications:
Color: Black
Applicable scope: iPhone 4, iPhone 4S
Battery capacity: 1800mAh
Standby time: 420 hours
Output voltage: DC 5V±0.1V
Output current: â‰?00mAï¼?.7Aï¼?br /> Input voltage: DC 5V±0.2V
Input current: �00mA�.5A�br /> Charging time: 3-5 hours
Operating temperature: -10â„?-50â„?br /> Storage temperature: -20â„?-65â„?br /> Item weight: 73g
Package weight: 133g
Item size: 12.4 * 5.9 * 1.8cm
Package size: 17 * 9.8 * 2.8cm

Package including:
1 * Backup battery charger case
1 * User manual