Battery: For robot:1*4.8V battery pack, charging by USB (incl.) For Controller:2X1.5V AA battery (not incl.) - Charging time: about 2.5hours. - Playing time: about 20mins. - Remote control distance: about 20-25M. - Functions: 1. Walking like human, sliding,quick and slow moving,go forward ,backward ..

Battery: - For dog: 1*3.7V 400mAh Li-po battery - For transmitter: 2* 1.5AA(not incl.) - 1*USB charging cable is incl. - Charging time: 90min - Playing time: 45min - Control distance: 6m Function: 1. Basic: forward & Backward, turn left &right, programming, 2. Singing & Dancing, telling ..