“Luminox watches are known for their durability and the new Master Carbon SEAL takes rugged to a whole new level. The Master Carbon SEAL uses a 40% CARBONOX TM+ case rendering the watch ultra-strong without adding the weight of steel or even titanium.” –Shaun Marriott, Lt Commander, Navy SEAL (Retired).
CARBONOX™+ case (6 times lighter than steel, 3 times lighter than titanium), with 316L stainless steel screw down crown and case back.