Advantages:All the powerfun EDF with motor have already dynamic balance tested.Running smoothly,Easy cooling,Stable structure,Safe and durable,excellent realistic sound.Make your plane more Efficient and stable.All the Powerfun motor has been soldered the banana plug. | Main Parameter: Powerfun 70mm EDF with 3400KV/4S motor: max continuous current is 75A,max thrust is 1810g.Motor weight 108g.Thus we recommend 80A ESC and 4s battery. | Powerful motor:powerfun motor Continuous operation, high temperature resistance,wear resistance and stable,it