⭐Material: High hardness mineral glass (Key scratch resistant),stainless steel case back,compressive and abrasion resistance. ⭐Movement: Japanese Quartz Original Movement, precise quartz movement for accurate time keeping. ⭐High-Quality: Japanese movement provide precise time keeping. Stainless steel strap makes sure that you can wear comfortably. ⭐30M Waterproof: Water resistant to 30 meters(99 feet), withstands splashes or brief immersion in water, but not suitable for swimming or bathing.