5 hours xtra Talk / 27 hours xtra Music / 200 hours xtra Standby
For iPhone 4 / 4S

Specifications
Battery Cell: Lithium Polymer Battery
Power Capacity: 1500 mAh
Rated Input: DC5V, Max 500 mA
Rated Output: DC5V, Max 1000 mA
Recharge Time: ~4 Hrs
Weight: 0.12 lbs / 0.05 kg
Dimensions: 5.1(L) x 2.5(W) x 0.65(H) inches
13(L) x 6.3(W) x 1.65(H) cm