The collection Hydroconquest purpose watches which are both functional during underwater adventures as well as perfect to be worn for everyday. Stainless steel 41mm case.Scratch-resistant sapphire crystal, screw-down case back. Screw-in crown, Unidirectional rotating bezel Sunray black dial.Applied arabic numerals and indexes.Silver polished hands with Swiss Super-Luminova Black rubber strap. Chronograph Column Wheel Funtions: Central 60 seconds hand 30 minute counter at 3 o\'clock Small seconds dial at 9 o\'clock Automatic movement Longines Caliber L688 , beats at 28\'800 vph, & has an approximate power reserve of 54 hours.