Longines Spirit Zulu Time - 42mm case with Green dial in Steel & Leather strap, water-resistant at 10 atm, L3.812.4.63.2 Chronometer certified by COSC
The Patravi ScubaTec Verde is perfectly designed for just such endeavors. Water-resistant to 50 bar – the deepest specification CFB offers in its diving watches – the watch boasts water-resistant gaskets and a screw-down crown along with an automatic helium valve to ensure gas escapes automatically during dives and ascents in order to prevent damage to the case.