The machine specializes in creating strong, flat, and flexible seams, ideal for activewear and swimwear. 

The integrated, energy-saving motor provides quiet, reliable operation and lower power consumption. 

It boasts a maximum sewing speed of up to 4,000-5,000 stitches per minute, significantly boosting production efficiency. 

This feature ensures high-quality stitches, even on difficult and stretchy materials like Lycra. 

An easy-to-use panel allows operators to easily adjust speed, set needle positions, and reset the machine. 

Besides flatlock seams, the W4D can perform plain seams, cover seams, tape binding, and bottom hemming. 

Includes features like automatic dormancy and a safety switch for improved user experience and machine protection.