Direct control servo motor, low noise, low shaking, working much more stable, avoiding pause structure relation can reducedamage and parts spoilage, using outer operation button can control speed easily, be equipped with needle bar back forward structure can make the machine stopped at pause point, to decide speed though operation control plate inputting. Best regards. Kirsten Chen (Sales manager) E-mail: jari (at) china-jaki.com MSN: kirsten0729 (at) hotmail.com Skype: kirsten.cn