Collection: Fifty FathomsCase Material: SteelCase Diameter: 43 mmCase Thickness: 14.85 mmWidth Between Horns: 23 mmBezel: Unidirectional satin-brushed steel with ceramic insert and Liquidmetal hour-markersDial: GreyStrap: Satin-brushed steelWinding: Automatic; Calibre F385Water Resistance: 30 barFlyback Chronograph.??The flyback chronograph, which measures a succession of elapsed times, eliminates many superfluous repetitive operations.