... competitive price, automatic trimming, packing portable sewing bag closer Electrical source240V/220V/110V 50-60HZPower90WSewing speed ... steel cam,6) easy operation7) seal paper,plastic,gunny bag8) this kind can be operated only by ... operation,use the left hand to hold the bag,the right hand to hold sewing machine, ... lightly,and the machine will move on the bag,the operation should be smooth.ater finishing, ...