Top-loading bobbin facility. Double speed, double thread. Features 16 built-in stitch patterns with metal frame inside. Electronic foot speed control. Automatic buttonhole. Rotary hook movement. Forward and reverse sewing. Automatic thread rewind separately. Thread drawer included. Sewing speed 450 +/- 50 spm. One-step button sewing. Four-step buttonhole sewing function. Built-in sewing light. Suitable for light to medium fabrics. Thread cutter included. Includes all-purpose presser foot replacement holder. Uses DC 12V 2A power. Uses hand switch or foot pedal to start.