The Ratio II Free Diver Helium Safe 1000M Quartz 1068HA96-34VA-01 Men's Watch, furthermore; present a Helium Valve, which is another big reason in the wake for others to hike the price.
Ratio II Free Diver Professional 200M Quartz 22AD202 Men’s Watch, another kid on the block of ratio dive watches for various depth. This one is with the least depth and water resistance available among the others.
The Ratio II Free Diver Professional 500M Automatic 32GS202A Men's Watch has a self rewinding Miyota calibre 8215 movement with 21 jewels and an indirect seep-second design.
The Ratio II Free Diver Professional 200M Sapphire Quartz Men’s Watch is a very serious divers’ timekeeping instrument with some serious dive features.