Citizen 200 meters divers watches. The level of water resistance determines the degree of water activity that the watch can withstand. Citizen watches have different levels of water resistance such as non-water resistant, WR50, WR100, and WR200. Citizen 200 meters divers watches are suitable for water sports activities as well as recreational scuba diving. However, it cannot be used during saturation dives that require helium. The case of these watches are designed to be tougher to prevent water penetration at greater depths where pressure is greatly significant. "WR200" or "WR20 Bar" are usually indicated in the dial or case back.