CER4 Certina DS Action Diver. Reference C013.407.17.051.01. Watch measures 43mm and is made from steel. Automatic movement caliber 407. Sapphire crystal on the front and a closed case back engraved with the distinctive turtle. Waterproof 20ATM or 200 meters. Functions are hours, minutes, sweep seconds and date. Rotating bezel for diving. This watch is fitted with the original black and white rubber strap (sized!) and will fit a wrist of up to 17,5cm. Naturally this watch is complete with the original box ad papers dated July 2015. A fantastic diving/watersports companion!