Board drone JJRC H31 Specifications : Remote control distance: about 70-80 meters Body battery: 3.7V 400mAh lithium battery Remote control battery: 4*AA battery(not included) Frequency: 2.4G Protection function ' overcharge protection/memory function/standby function Functions: up, down, forward, backward, turn, left shift, right shift, 360 degree rolling, one key return, headless mode, waterproof, high speed aerobatics, high speed rotation, synchronized rotation Bagi yang berminat silahkan diroder