Luminous Digital Watch $ 5.22 Strap: High-quality alloy Case: alloy case Case bottom: stainless steel case back Mirror: Strengthened mineral glass mirror Waterproof description: not waterproof Dial diameter: 3.6cm Dial thickness: 0.7cm Strap width: 1.8cm Watch circumference: 19cm Weight: about 46 grams Whether waterproof: not waterproof