Tech-parameters:1.Maximum speed: 850rpm; 2.Automatic trimming/color change/thread breakage detecting; 3. stitch length:0.1~12.7mm; 4.Memory: 500.000 stitches. Max 2 billion stitches; 5.Power source: Single-phrase 110V/220(50Hz) Main Accessory: Garment frame/cap frame. Options: sequin device, chenille device, cording device