Luminox is a brand of watches and clocks that use tritium to illuminate the hands and numerals of its products. Luminox was originally designed for United States Navy SEALs when a procurement officer approached the company to design a watch specifically suited for the needs of this special military unit. Though the watches were never accepted by the SEALs due to design issues in the illuminating tritium, the watches were made available to the general public. All Luminox watches are Swiss-made. Luminox also makes branded watches for various military groups with custom insignias and designs. Among these are the Heliswiss team, the US Bobsled Team, US Coast Guard, US Air Force, and a variety of other special forces and EMS teams worldwide. The brand has since expanded into over 30 countries. Among the more popular watch models are those designed using visual elements of the fighter jets made by aviation titan, Lockheed Martin. To date, Luminox has designed watches taking cues from the SR-71 Blackbird, the F-117 Nighthawk, the F-16 Fighting Falcon, and the F-22 Raptor In 2006, a fifty-percent stake in the Luminox company was purchased by the Swiss brand Mondaine, giving Mondaine increased access to the American market, and Luminox increased access to the European and Asian markets.