the machine is greatly improved out of normal lockstitch sewing machine with its take-up-lever,rotary hook and feeding system.can be applied with all kinds of sewing threa when cut the tension 15%down.stable sewing machine,excellently low vibration low noise,end free of puckering.suitable for sewing garments,fashion dress,children's clothes; can be applied for heavy material like leather,jeans cloth etc. 60*23*56cm