waterproof quartz silica gel watch silica gel + quartz Easy to wear on/off Non-toxic,no irritation ... Past RoHS,SGS,CE Hot!!! waterproof quartz silica gel watch: 1.Movement:Top Quality Grade A Quartz Movement2.Specifications ... Material:Alloy4.Strap Material:Silicone + steel sheet5.Strap Color: 13 solid colors ; Pink , Black, White, purple, green,orange,grey,yellow,blue ...