※HG 1/10 RC 4 4 U.S. Military Vehicle P408 Racing Car Servo ESC Motor 16CH Radio. Radio: 2.4G HZ, 16CH. Servo: 9KG, 9G. Radio system. Motor: 550 Motor. 3, Don't keep the car running by two batteries, when one is power off, let the motor cool down for about 10 minutes, or the motor maybe burnt out.