The Luminox Navy SEAL 3500 Series Watch for Men is based on the same men's watch first introduced in 1994 for the Navy SEALs. Luminox continues to be preferred by many elite military and law enforcement units worldwide and is a great choice for hardcore outdoor adventures. Constant-glow 25-year night-vision tubes illuminate the face so you can tell time in any light, even absolute darkness. The 3500 Series watch features a 44mm CARBONOX case, a unidirectional rotating-case bezel, and a screw-on case back. The hardened mineral crystal and double-security crown gasket meet demanding conditions. The strap is made of Black Signature PU. The Navy Seal 3500 Series Watch for Men utilizes quartz movement, and each watch is individually tested for water resistance down to 200m (660'). Imported. 44mm CARBONOX case Constant-glow night-vision tubes Unidirectional rotating bezel Double-security crown gasket Hardened mineral crystal Black Signature PU strap Quartz movement 5-year battery life Water resistance to 200m