Specified as per MIL-PRF-46374G, extremely robust double case construction, red trigalight for tactical missions.• Model: P660041F1Y01• Case: Steel inner container, carbon fiber outer case• Bezel: Steel black PVD-coated, bidirectional rotating, with trigalight? Insert• Crystal: Mineral K1• Water Restistant: 660 ft / 290 psi• Size: Diameter 45 mm X Thickness 10 mm• Dial Color: Black• Band: Rubber