They can sew with ease all kinds of fabrics like silk, demin or leather. Ideal for arts and crafts projects. Comes with thread loop for your great convenience. Features: 1.Double thread, Double speed 2.Automatic thread rewind 3.Use hand switch or foot pedal to start 4.Use DC6V 800mA power or 4”AA” batteries(not included) 5.Product weight:0.648Kg 6.Product size:19.5*12.5*20cm 7.Accessories: foot pedal, thread bag.