Titan Zero Hour Diver's Black Dial Interchangeable Strap Automatic Watch| 500 M Water Resistant - The Titan Zero Hour Diver's 500M is engineered as a professional dive instrument, built in accordance with ISO standards for diver's watches and tested for performance under extreme underwater conditions. Water-resistant to 500 meters, it undergoes rigorous validation including overpressure resistance, thermal shock testing, condensation control, shock resistance, and assured legibility in low-light environments. A 120-click unidirectional bezel with a sapphire insert enhances scratch resistance while preserving long-term legibility, secured by a unique Aqua Lock system to prevent accidental movement. The screw-down crown with protective guards and helium escape valve further supports operational reliability at depth. Crafted from Grade 2 titanium, the case and strap offer exceptional strength with reduced weight. High-performance Super-LumiNova X1 C3 ensures intense brightness and extended visibility in low-light conditions, while signature Titan-inspired indices maintain a distinctive identity. Powered by the in-house automatic 7AC0 movement, delivering a 40-hour power reserve and an accuracy of -10/+30 seconds per day, the watch is finished with a sapphire crystal with triple-layer anti-reflective coating and a specially coined case back featuring a diver's mask motif-bringing together certified performance, mechanical precision, and enduring design.