Zeetron iPhone 3GS Replacement Battery Kit (Includes 7 Piece Opening Tool Kit + Screen Protector + Zeetron Microfiber Cloth) High quality replacement battery Lithium Ion, 1200mAh extra high capacity, extra long stand-by times Will ONLY work with the iPhone 3GS Includes a Zeetron microfiber cloth, 7p tool kit, screw driver, and a screen protector