Stitch length 0.1-12.7mm Speed 300-850rpm/300-1000rpm Main motor High Efficiency AC Servo Motor/Excitation Motor X 2 X.Ymotor Pulse MotorX2 Power source 1-phase220V/240V(50/60HZ); 3-phase220V/240V/380V(50/60HZ) Power consumption 0.8kw/1.0kw/1.5kw Memory capacity standard:1,000,000 stitches