Our new 2014 Sea-dweller feature a helium escape valve and are water tested to 300 meters! The purpose of a helium escape valve, or helium release valve as it is sometimes called, is to ensure that professional divers have access to a timepiece that can withstand the changes in pressurization inherent in diving.

This small, one-way valve integrated into the watch’s external casing activates when the differential between the inner and outside pressure reaches a critical level to allow helium trapped inside the case to escape.

Chances are that unless you are a serious professional diver you will never actually use this feature but it does make a cool talking point. It is also indicative of the extensive functional capabilities of this professional replica wristwatch.