MJX G-Maxtech RC Radio Control Remote Control Battling Fighting Tanks - Set of 2 Full Size Infrared Battle Tanks with TurboTech Exclusive Upgrades Features 2-channel on the same frequency, supports RC fight with different channels Comes with four hit point indicators, one indicator will go off when it shot by a bomb once or by machinegun for five times Infrared fight function. The tanks are made of plastic, metals, electronic components with rubber tracks Tank size is about 4 x 5 x 14 inches. Tank battery is 6 volt 400mAh. Controller battery is 2 x 1.5v AA battery (not included). Charging time 4-5 hours. Control range about 15 meters. Tanks can move forward/backward, turn left/right. Barbette can rotate in 350 degrees, also comes with hit points indicator. Sound effect including engine start, idle, laser gun and gunfire.