This is a mini lightweight, compact and portable sewing machine that features double thread, double speed, No reverse button. Perfect for little projects or teaching kids and beginners to sew. --Before you purchase, please note that this Mini Sewing Machine is a basic level machine, it is unable to sew certain thick fabrics (thick jeans), just ordinary thin fabrics. --Power supply and battery, two power supply modes, but the power and the battery cannot be used at the same time. If they are used at the same damage may happen to the machine.