What is the difference between sewing needle and belt ring in prepuce operation?

The former needs stitches removal and can't take a bath after operation, and the belt ring doesn't need stitches removal and can take a bath after operation without any influence! Hainan Modern Men's Hospital highly praises the "Saint-ring seamless foreskin cosmetic surgery" which has obtained patents from many countries. It has the advantages of minimal trauma, no complications and no stitches. The cost is several hundred dollars more expensive than the general circumcision.