With its self-powered Swiss illumination system that glows for a staggering 25 years, the Luminox* Original Dive Watch is water resistant to a mighty 200 metres. We suggest you don't test this personally as at 200 metres down you may find that even though your watch will be functioning perfectly, you very probably won't be. As suppliers to the US Navy Seals, Luminox ensure that their watches are even harder than the guys that wear them. The Dive Watch has an ABS plastic injection moulded 35 mm case, and is protected by a sapphire tinted glass window made of tempered scratch resistant mineral glass crystal. It's entirely Swiss made with a multi-jewel Swiss quartz watch movement, has a unidirectional ratcheting bezel featuring a bright traser "dot" encased in aluminium, and a four year battery with an EOL early warning system to let you know when the battery needs replacing. So how good are Luminox watches? As suppliers to the U.S. Navy SEAL Teams, U.S. Air force pilots and other forces, Luminox watches are manufactured by highly skilled craftsmen using the latest technologies and the finest materials (in Switzerland of course). What sets these state-of-the-art Luminox watches apart from all other watches in the world, is that not only are they exceedingly tough and resilient (a fairly vital requirement for US Navy SEALS), but that each watch has a bespoke self-powered illumination system. Each watch employs tiny self-powered micro gas lights developed by the world leader in the luminous compound industry. These micro gas lights (borosilicate glass capsules) are installed into the hands, hour markers, and when necessary, their bezels, and need no external light source to "charge" the paint on the dial or hands in order to glow. Nor do they require a push of a button to light the dial as do watches with electro luminescence. It's the ultimate illumination system, will glow continuously for more than 25 years, and glows 100 times brighter than other luminous watches! It comes as no surprise that all Luminox watches are entirely Swiss made, with multi-jewel Swiss quartz watch movement, and of course they're very water and shock resistant. Sheer excellence, hard as nails, and deeply stylish, these watches are utterly reliable and can take anything you can throw at them (that's of course assuming you can't pick up a Hummer and lob it - that may be a bit much).