100% AUTHENTIC Swatch Unisex Chronograph WATCH YCS4024 Aluminum case. 19mm neoprene strap. Glow hands and white second hand. Chronograph and date function. Case diameter 39mm. Part of the Irony Chrono category from the 2003 Swatch Spring Summer Collection. Water resistant at 30 meters (100 feet). Swatch Wildly Unisex Watch YCS4024 Series Swatch Gender Unisex Case Material Aluminum Case Diameter 39mm Dial Color Black Movement Quartz Clasp Tang Bracelet Rubber Water Resistant 30 meters / 100 feet Crystal Plastic