UD1690-1 Case material : 316L Stainless SteelCase diameter : 37mm(excluding crown)Case thickness : 11.2mmLug width : 20mmLug to Lug : 45mmDial : Black sunburst cycle DialDial Lume : Super C3 luminousGlass : Sapphire Crystal glass with blue AR coatingScrew-down Case Back, Brushed Proce..