Perfect seaming Quality Oil-Free working environment (oil-free head) Automatic Thread Trimmer (wiper)Automatic Hook Thread Clamp Step Motor Driven Gradually Adjustable Presser Foot Height 50 Different Bartack Program at the memory Endless possibility of Stitch Pattern Formation Standard Bartack, D - X - Y - L bartack possibility Velcro and envelope style stitching possibility Direct Drive Servo Motor technology (3.000 rpm) Direct Drive Servo Motor technology (2.700 rpm) Belt-Free, Vibration Free, Silent Working environment Maximum Power Saving Optional (XLC Large Hook)