... 10,000,000 stitches.2. Stable running speed: Max 1050rmp. Under 6mm stitch, the machine speed will not slow down . 11mm Stitch ,the ... machine can reach 830Needles / minute.3. Automatic thread holding ... .6. There are 3 basic features of this machine:a.Low noise, When speed is 1000, noise is 70 decibel.b.High ...