The Navy SEAL 3001.EVO.BO.S updates the original Navy SEAL timepiece that made Luminox famous. While keeping the size of 43 mm and the distinctively narrow dial opening, this watch now comes with the screwed in case back and crown as standard in today´s Luminox water resistant timepieces. Description Size/Diameter: 43mm Water Resistance: 200 meters, 20 ATM, 660 feet, individually tested Movement: RONDA 515.HH6 Swiss Quartz Battery/Battery life: 50 months Case: CARBONOX™ Bezel: CARBONOX™, uni-directional rotating bezel, fitted at 12h with a protected colored light tube Case back: 316L stainless steel Crystal: Hardened mineral crystal Crown: 316L stainless steel Height: 13mm Weight: 50g