Zodiac Watch Super Sea Wolf Skin Diver ZO9218. 70 years ago, Zodiac launched the Sea Wolf Diver. Featuring a caliber 70-72 automatic movement and snap on case back with gasket labeled 20 ATM. Especially Water Tested, the new Sea Wolf Diver gained instant popularity. The new sealing system, combined with the thick and highly domed acrylic crystal and longer crown enabled the Sea Wolf to function as the first genuine tool divers watch, rated to a depth of 660 feet.