Label clock, watch light black, ceramic mens square watch, Swiss watch, sports and leisure watch Each watch has unique design style and characteristics, suitable for different occasions and personal tastes. Material and craftsmanship: The watch case and strap are made of 904L stainless steel, and the mirror is made of sapphire material Waterproof performance: Watch may have varying degrees of waterproof performance, suitable for different usage scenarios, from daily waterproof to diving specific.