Jack A4B Anti Thread-Off Computerized Lockstitch Sewing Machine

The Jack A4B is a high-performance computerized lockstitch sewing machine built for precision, efficiency, and reliability. Designed for professional garment production, this machine features Jack's brand new patented bottom thread clamping system that effectively reduces thread-off issues when starting to sew.

Key Features:

• Anti thread-off technology with bottom thread clamping for clean start stitches
• Stepping motor control with presser foot height adjustable from 0–13mm based on fabric thickness
• High precision stitch length control down to 0.1mm with lock function to prevent accidental adjustments
• Variable stitch patterns for fashionable and creative sewing results
• Easy to use digital control panel with multiple sewing modes

Technical Specifications: