U-Boat watch. Darkmoon Blue Soleil. 316L stainless steel case. Filled with special oil that emphasizes the dial. Green metal with soleil finishing. Innovative locking system (Locking Ring System) with quick battery replacement. Quartz movement. Hours, minutes, screw-down crown. Domed sapphire crystal. 50 meter water resistance. Black Ultra-resistant vulcanised rubber. Steel tongue buckle. 44mm case diameter.