Benyar Chronograph Mens Calendar Watch has: MATERIAL: High hardness mineral glass (Key scratch resistant),stainless steel case back,compressive and abrasion resistance.MOVEMENT: Japanese Quartz Original Movement, Precise Japan quartz movement.WATCH FUNCTION: Full Functional Chronograph, 30M waterproof and Date DisplayWATERPROOF FOR DAILY USE: 3 ATM Water resistant, NOT suitable for diving, swimming, snorkeling, water-related work）
