1. High universality: Applicable to brush / brushless controller, high / low/ sensor/ sensorless motor- electrical system, 24V/36V power system;

2. Facility to install: Install as the normal chain wheel crank in bicycles, apply to ordinary bicycle D-type B. B. Parts.

3. Three levels power adjusting function: It has three assistant power levels and the battery will be displayed on a dashboard.

4. Riding on comfortably: Large linear torque range with great stability and you will feel more soft when the gear changes.

5. Well acclimatization: It has excellent anti-jamming ability that can work as normal in dirty water.

6. Speed limitation: It can set a maximum speed transmission ratio (such as: 25 km / h power cut)