The Jack 1377E (or JK-T1377E) is an electronic, computerized, industrial button-attaching sewing machine used in garment manufacturing for efficiently and precisely sewing buttons onto clothing. Key features include a direct drive motor, user-friendly LCD panel for parameter control, an automatic presser foot lifter, and an electronic thread trimmer for high precision and stable operation. It is designed for light to medium-weight fabrics and can attach buttons in parallel or cross-stitch patterns.