Luminox Mens Carbon SEAL 3800 - Olive Drab Dial - Carbon Compound Case - 300mThis Carbon SEAL dive watch is made of a strong carbon compound, resulting in a lighter case (three times lighter than titanium), and a tougher durability than most other materials. This model also features a remarkable 300 meters water resistance and Night Vison illumination for superior undersea visibility. Ultra lightweight 40% Carbon Compound case and case back Ultra lightweight 40% Carbon Compound unidirectional ratcheting bezel Screwed in case