1. The quantity of buttons can be set as 1~6

2. The distance between buttons can be set between 20~100mm

3. button attaching anti-displacement function

4. Anti starting accident during replacement of bobbin.

5. automatically identify the front and back of the buttons

6. the button size and thickness of the automatic adjustment function

7. The maximum sewing speed is 2,700 rpm

8. Equipped with a thread catcher device at the beginning of sewing and a short thread tail function at the end of sewing.

9. Replacement of bobbin function with one key start

10. infrared positioning function