REACTOR Men's 57010 Nucleus Chronograph Anthracite Dial Stainless Steel Watch Quality Japanese-quartz movement Extra-thick Mineral crystal for superior shatter-resistance and scratch-resistance; 34 mm wide stainless-steel bracelet at the widest point; 18 mm wide at the case lugs (band width) Built for performance--Solid 316L stainless-steel, solid screw bar case-to-band attachment, and solid forged case-backs Screw-down crown; luminous (No Suggestions) painted hands and markers Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving