Model KX8500D-4 is provided with automatic thread trimmer, automatic needle position, automatic stich amount setter, automatic thread wipe and many other sewing modes. It is available to sew shirts, uniforms and sportswear, and also available to sew portfolios, purses, shoes, jeans and other medium-heavy materials; especially suitable for sewing trade marks, pockets, sleeve-cuffs etc. It can be operated with high quality and high efficiency.