MWC 300m Water Resistant Stainless Steel Tritium GTLS Navigator Watch (Automatic)SKU: NAV AU ST SL These robust 300m water resistant watches are specifically designed for marine, surface, and airborne navigation applications, meeting U. S. MIL PRF 46374G specifications. Each watch features a 12 hour ceramic bezel for easy and straightforward tracking of a second time zone. The bezel has high visibility numerals, and the dial is clear and easy to read even in adverse light conditions. The watch uses Tritium GTLS (Gaseous Tritium