All black U-Boat Classico AB PVD U-Boat “Left Hook” automatic IFO (Italo Fontana designer) Italian 53mm model with carbon fiber dial, black rubber strap, powered by Swiss ETA 2824 25-jewel movement. Further Specifications: Movement: ETA Cal. 2824-2 25 jewels Swiss Automatic. Functions: Date calendar, window display. Case: Satin finish solid AISI 316L Stainless steel. Black PVD (Physical vapor deposition) coating. Numbered on side. Crown: Factory Logo engraved/embossed. Sport style, screw-down (threaded). Oversized style. Crystal: Flat profile. Sapphire. Dial: Black color. Carbon fiber. Luminous ( radiation-free Super-LumiNova ) hour markers. Hands: White varnished. Super-LumiNova radiation-free luminous filled. Case Back: Screw-down style, Exhibition crystal. Factory Engraved/Raised Logo. Band: Black color. Rubber with steel shields. Factory Logo embossed. Clasp: Deployment, center opening. Factory Logo engraved/embossed. Water Resistance: 50m/165ft /5atm.