Military Navigator Watch Not a copy, but the original H3 Tritium watch with super accurate Swiss quartz movement, water resistant to 30 meters, NATO nylon band, second hand, tritium light system is 100 times brighter than other systems and requires no batteries or maintenance. This top quality Swiss watch is extremely robust, reliable, and has applications in emergency, safety, protection, arm forces and by fans of adventure and sport everywhere. MIL-W-46374F-Type 6 and 6645-01-364-4042.