Featuring a Carbonox case for weight reduction 6 times lighter than steel, this Luminox Master Carbon SEAL model won't weigh you down. Equipped with a screw down crown and case back to ensure 990 feet water resistance, unidirectional rotating bezel with protected color light tube at 12:00, chronograph movement, and self-powered illumination. Ultra-lightweight 40% Carbon Compound case with 316L stainless steel screw down crown and case back Ultra-lightweight 40% Carbon Compound unidirectional ratcheting bezel fitted with colored light tube at 12:00 Black and blue patterned dial with date window at 3 o'clock Anti-reflective sapphire crystal Multi jewel Swiss quartz movement Luminox self-powered illumination, constant glow for up to 25 years Super Luminova light on the dial Navy webbing strap with brushed stainless steel signature buckle 300M water resistance (990 feet), individually tested Case width: 46mm (approximately 1 13/16")