1. Add ion ,body balance, health 2. Nice quality 3. Fashion design silver 4. simpless but decent 1. Plating: gold,rose gold ,black plating available2. 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-ring ,movement,glass6.drawing make exactly ...