... health 2. Nice quality 3. Fashion design silver 4. simpless but decent 1. Glass: Sapphire crystal2. Meterial :stainless steel 316L or 3043. ... OEM are most popular, custom designs are available,free log4. MOQ :500pcs ,free model cost5.watch case ... set including :case back ,case ,bezel ,crown ,tube ,o-ring,i ...