High speed motor as power supply system. Built-in water cooling system, safe and reliable.High quality guarantees its stable performance.High speed RC boat max speed can reach 20km/h.2.4GHz frequency technology resisting disturbance.New design idea, novel appearance andexquisiteworkmanship.With 7.4V 700mAh professional high capacity chargeable battery. Use complete radio orientation function of a standard direction engine.Function: go forward, go forward, turn left and right, can be easily controlled.