With bult-in direct drive servo motor to achieve the accuracy of the machine's rapid start-up and braking; a significant reduction in noise and vibration and reduce energy consumption, compared with conventional rive unit, battery depletion of 35% or more, suitable for sewing various shirts, suits olsimilar garments, especialy its colar, breast and other parts,inverted send high-speed sewing material pitch to be completely consistent. side cuterdevice sewing and knife trimming procedures in one time efficiency