Gender: mens diameter: 45mm strap: 22mm water resistant to 330 feet (10 bar) this watch has a hard mineral crystal and a japanese quartz movement, the best quartz movement in the watch industry! Titanium chronograph watch with a black titanium case, yellow dial, yellow bezel, yellow hands, black markers, and grey chrono dials. Date feature, black rubber strap. Luminous hands! Boccia watches are all solid titanium, not titanium plated. Titanium is non-allergenic and very friendly to the skin. When boccia watches come with a strap, the buckle is also solid titanium.