The Luminox 3581 Navy SEAL Chronograph Sports Watch is a great choice for hard-core outdoor adventures. This sports watch maintains its lightweight, durability, and corrosion resistance with a CARBONOX case, and a stainless steel case back. The unidirectional rotating bezel is also made of CARBONOX, and has a light tube at 12 o'clock. A tempered, scratch-resistant mineral crystal resists extreme use in the outdoors. Constant-glow, 25-year night-vision tubes illuminate face so you can tell time in any light, even in absolute darkness. Made to endure wet conditions, the Navy SEAL Chronograph features a Black Signature PU strap and a brushed, stainless steel buckle. Tested for water resistance down to 200m (660'). 45mm. Imported. Manufacturer model #: XS.3581.BO. Great for hard-core outdoor adventures CARBONOX case and bezel Stainless steel case back Scratch-resistant mineral crystal Constant glow night vision tubes Water resistance to 200m Black PU strap