This model is a subclass of High lead electronic pattern sewing machine series. Equipped with high accurate electronic control system and high performance servo motor, sewing pattern and sewing parameters such as stitch number, stitch length, etc can be set at discretion within the range by a programmer. It can also be operated by inputting the pre-programmed stitching pattern through USB connection. With the features of precise structure design, reliable driving and convenience in pattern input. Pattern revision, pattern storage and pattern recall. It is a large size electronic pattern sewing machine specially designed for stitching extra heavy duty articles such as leather, webbing belt, etc.