The SewSimple Handheld 2-Thread Sewing Machine may be small, but it has a 2-thread lockstitch just like a full-size machine, preventing stitches from unraveling. The machine uses 4 AA batteries or a power cord and is ideal for craft projects and mending. It's also portable and convenient for sewing while traveling. Mend a torn pocket or shorten trousers all within minutes. You can sew projects in school, at the office, or at home. Details: 2-thread lockstitch to prevent stitches from unraveling Requires 4 AA batteries or a power cord