Swan & Edgar Collection Hand assembled & calibrated 210 part 20 Jewel. Automatic movement. Water resistant 3ATM Stainless steel case Domed Sapphire Glass Skeleton Case Back Hand waxed Leather Strap Hypoallergenic IP plating Dimensions Case diameter 43 mm Case thickness 15.5 mm Lug width 22 mm Strap width 22 mm Strap length 200 mm (75*125mm) Weight 100 g