Case Material: 316L Stainless Steel with Black PVD Coating (or Grade 3 Titanium depending on the specific model variant).Movement: Japanese NH35A / NH36A or Hangzhou automatic self-winding movement with a ~41-hour power reserve.Crystal: Scratch-resistant sapphire glass with anti-reflective (AR) coating.Water Resistance: 200 meters (20 ATM) professional dive ready with a screw-down crown.Bezel: Unidirectional rotatable ceramic bezel insert with a C3 luminous pip.Luminous: Japan C3 Super-LumiNova (green glow) on hands and markers.Dimensions: Typically around 42mm to 44mm case diameter, 13mm thickness, and 22mm lug width.