CASE Diameter - 42 mm Thickness - 12.5 mm Lug-to-lug length - 48 mm Lug width - 20 mm CASE FINISH - Brushed, Polished Bevels 316 L Steel Screw-In-Caseback Screw-In-Crown MOVEMENT Sellita SW 200-1 Automatic Degree of motion control - COSC CERTIFIED Power reserve - 38 H Frequency - 28,800 A/h (4 Hz) Jewels - 26 GLASS Sapphire Crystal Flat Anti-Reflective BEZEL Monodirectional Insert - Aluminum DIAL Color - Sunray Blue Indexes - Applied Luminescence - SuperLuminova C3 STRAP Material - Steel Color/Finish - Brushed Lug - 20 mm Buckle - 18 mm