Luminox 3181 : Serie: COLORMARK CHRONOGRAPH 3080 SERIES, Family: Sea, Function: Chrono, Movement (technology): Quartz, Size of case diameter (mm): 44.00, Case material: Carbon reinforced PC, Case Bezel: Rotating 1-Way Diver, Case Back: Caseback with Screws, Crown: Double-Security Gasket, Crystal/Glass material: Hardened Mineral, Water resistance (m/ft/atm): 200 / 600 / 20, Strap/Bracelet material: Rubber / Silicone / PU, Illumination: Night Vision Tubes (25 years)