Detomaso DT2059-B Tasca II XXL Pocket Watch With Manual Winding Trend Mehrfarbig Analog Display Japanese Quartz skeleton pocket watch with hand winding and view of the clockwork mechanism high quality movement from miyota (caliber 8n33) Casing dust and chain made from 316l stainless steel (surgical steel) K1 hardened mineral crystal glass Japanese-quartz Movement Case Diameter: 53mm Water Resistant To 165 Feet