Features: 1.Low energy consumption, compared with clutch motor , it can save power 60-80%. 2.Noiseless. 3.Low rotary speed time area adjusting. 3.Low temperature in working area. 4.Balance power. 5.Stepless speed adjusting from 0-4000rpm. 6.The maximum speed set and locked. 7.Low rotary speed with high torque. 8.Digital display. 9.Overload protection. 10.Can be widely used in garment factories, shoe factories,toy factories,cases and bags factories etc.