Lightweight comfort with heavy weight functionality. This Luminox Limited Master Carbon Seal timepiece features an ultra-light 40% carbon compound case for toughness that won't weigh your wrist down. Equipped with uni-directional rotating bezel, CARBONOX dial, date window, and Swiss quartz movement. Illumination provides a constant glow for up to 25 years without having to push a button or exposure to light. Set contains extra band and screwdriver for band switches. 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 Carbonox 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 Gray NATO webbing strap with brushed stainless steel signature buckle 300M water resistance (990 feet), individually tested Case width: 46mm (approximately 1 13/16") Comes with watch case, rubber strap and strap changing tool