Battery for iPhone 3GS 8GB 16GB with Tools Kit Card Reader- NOT for iPhone 3G Voltage: 3.7V. Capacity: 1200mAh. Color: White. Dimention: 68x41x3.5mm High durability with extra power. Without memory effects over 300 cycles Built-in rechargeable battery protection circuits Compatible with iPhone 3GS 8G or 16G, not for iPhone 3G Package Includes: 1x battery for iPhone 3GS, 1x 7pcs Tools