L56  Longines HydroConquest. Reference L3.781.4.96.9. Watch measures a perfect 41mm and is made from steel. Automatic longines movement caliber L688 (Base ETA A31.A01) which provides for 54 hours of power reserve. Sapphire crystal on the front and a closed case back. Waterproof 30ATM or 300 meters (VERY suitable for swimming and diving). Functions are hours, minutes, sweep seconds and date. Rotating blue ceramic bezel for diving. This watch is fitted with the original blue rubber strap (sized for a wrist of up to 17.5cm) with steel folding clasp. Naturally this watch is complete with the original box and papers dated December 2020. What a super sports watch!