Replacement Battery For iphone 4 4G 16G 32G-1420mAh with 8 Pieces Opening Tools Voltage: 3.7V. Capacity: 1420mAh. Color: Black. Weight: 40g. Dimention: 80 x 33 x 4.4mm. High quality, competitive price, li-ion pack. Built-rechargeable battery protection circuits safity. High durability with extra power. Without memory effects over 300 cycles. Package Includes: 1 x Battery for iPhone 4 4G 16G 32G, 8 x free Tools.