Swiss-made and vetted by active and retired Navy SEALS, the Luminox Special Operation Challenge 4223 gives the most serious athletes and rugged adventurers a chance to take their missions to a higher level. The 45 mm timepiece packs a punch beneath its stainless steel case, featuring a multi-jewel swiss quartz movement and a 10 year lithium battery. The self-powered illumination technology, which boasts a 25-year glow longevity, is Authorized for Navy Use (A.N.U.), naturally making Luminox watches a staple for Navy SEAL teams for over two decades. Water resistant up to 200 meters and equipped with two interchangeable PU and black webbing straps, there’s no wonder this all-terrain companion is the top choice for peak performers weathering extreme conditions.