Reactor Mens MX Tritium Watch - Orange Dial - Black Case - Rubber Strap- 200MShowcasing 14 tubes of Swiss tritium, a black IPB plated stainless steel case with orange dial and a black strap made of rubber and silicone, the Reactor MX is ready to assist you, day or night. Swiss Tritium illumination tubes at all 12 hour markers as well as on the hour and minute hand will glow continuously up to 25 years without exposure to light or depleting the battery Hour, minute and second hand also have luminous application in addition to