Black PVD plated stainless steel case. Water resistant to 500 meters. 316L steel in PVD black rotating, at 12H colored LLT protected by metalized mineral glass window. Sapphire glass, double side antireflective coating. Automatic Helium Release Valve. Bezel Locking System to prevent bezel to turn accidentally in either way. 30mm black PU strap with IP black plated brushed buckle, 25mm black PU extender strap with IP black plated brushed buckle. We are an authorized LUMINOX® Watch reseller. All LUMINOX® Watches we sell are under manufacturer warranty.