Brand:KERONG Model: KR-S90A Material:Zinc Alloy+ABS Driven Mode: Motor/Servo Battery: 6V(4*1.5V batteries) Unique Design:Hidden Installation Micro USB connector/3.5mm socket Unlocking Way: Card/Bluetooth(available customized) Rection time:Less than 0.5S Working Life: 500000 times OEM: Accepted