Multifunction: This RC tank can simulate the sounds of tank battles, such as the sound of cannons and engine sounds. It can simulate tank forward/backward, turn left/right, 350° turret rotation and other actions by remote control. Let your boy simulate military maneuvers and war adventures. 2pcs Rechargeable Battery: The RC Army Tank is equipped with 2 built-in rechargeable 3.7V 500mAh batteries with charge protection function. Environmentally friendly battery, stronger fighting power and longer fighting time. Rechargeable batteries can be used continuously for about 30 minutes (2 pieces for 60 minutes) after 2.5 hours of charging, which can provide a longer entertainment performance.