100% Brand New. * This is a double layer extended battery, which has twice the thickness of your stock battery. * You need to use the back cover comes with this package to host it, this battery will not fit in your original back cover. * This package is specifically designed for the cellphones we list here, if your cellphone is not in the list , then it's not for you. ====================================================================== 1)6400mAh Extended Battery: * Brand: AceSoft . * This battery has an integrated microchip that prevents overcharging and lengthens battery life. * Cell type: Lithium Ion. * Voltage: 3.8V. * Capacity: 6400mAh. * The battery operation time depends on conditions such as: Transmitting power level, Signal (distance between the phone and the base station),Network parameters defined by the operator. 2)Battery Back Cover. * Keep your cell phone look new. * Size: perfect fit. * Accessory only, cell phone not included. 3)TPU Battery Back Cover Case * TPU, also known as thermoplastic polyurethane, is more cut and tear resistance over rubber. * This gel case made from a special tough gel, which makes it flexible like a silicone but tougher than a crystal case.