Is the Speedmaster professional really waterproof ?
The Speedmaster professional is rated 50 meters water resistant (30 meters for display back versions) , this mean that you can expose it to water for : showers, bath and swimming. But remember to ALWAYS ask for an hermeticity check every year if you regulary expose your speedmaster to water. It is not recommended to expose vintage speedmasters to water unless they have been carefully checked by Omega for water resistance.
