1. Brushless, used for log time(bearing), no need to maintain
2. Less space and weight, great power, simple construction
3. Excellent starting performance, no magnet-hysteresis damping energy consumping and good creeping slop capacity
4. No spark, no electric interference, explosion prevention
5. Highh efficiency, less electric power consumption
6. Large starting power, strong output fuction, stepless speed regulating
7. High cost performance, much more economical than governor
8. Superior water-proof function