Invicta Men's 1254 Sea Spider Stainless Steel Mechanical Skeleton Watch with Black Band Watch featuring round skeleton dial, exhibition caseback, and coin-edge unidirectional bezel 49 mm stainless steel case with Flame Fusion dial window Mechanical hand-wind movement with analog display Black polyurethane strap with stainless steel accents and fold-over closure Water resistant to 50 m (164 ft)