Hazard 4 Heavy Water Diver BlackTie B GMT Watch - White

Engineered for demanding conditions on both land and underwater, the Heavy Water Diver BlackTie B features a durable and lightweight titanium case, water resistance up to 300 meters, tritium illumination, and a high-precision Swiss movement. Ideal for those who require reliable performance in extreme environments.

Outfitted with a Ronda 515 quartz mechanism powered by a Renata 371 battery, the timepiece features a robust 50 mm case crafted from grade 2 titanium. This construction ensures the watch remains lightweight, highly durable, and hypoallergenic.

A significant attribute of the model is its impressive water resistance rating of 30 atmospheres, providing reliable protection for activities such as diving up to 300 m and swimming. The notched, unidirectional diver’s bezel equipped with a tritium zero marker and a screw-down crown—designed for effortless adjustment—even when wearing gloves or operating underwater, allow for precise tracking of dive duration. The oversized crown further enhances usability in challenging conditions.

A standout feature of the dial is its bold, highly legible numerals in military design, produced using 3D technology. An integrated 24-hour scale allows for quick and clear reading of military time, while an additional minute-marked ring inside the dial enhances overall visibility.

A date window is positioned on the dial, displaying the current day of the month.

All watch components are shielded by a sapphire crystal with an internal anti-reflective coating, offering superior resistance to scratches and improved readability even in bright sunlight.

An additional scale for tracking time across various time zones is included in the GMT variant.

The hands, indices, and zero marker utilize tritium microtubes filled with gas, delivering powerful, uninterrupted illumination without the need for external activation. Elevated by 80% above the dial surface, the tritium tubes ensure visibility from various angles, not solely from a direct overhead view. Tritium backlighting guarantees legibility of the watch face under all lighting conditions, even in total darkness.

With a half-life of 12 years, tritium will emit light at half its original brightness after a 12-year period.

Engineered with a robust rubber strap featuring a grooved texture adorned with a map-inspired pattern and multiple perforations, the watch delivers superior moisture wicking, enhanced airflow, and prevents sweat accumulation on the wrist. The strap’s material resists both sweat and moisture, making it exceptionally well-suited for a range of demanding activities. A dedicated locking mechanism on the strap secures it in place, effectively eliminating the risk of accidental release.

Thanks to the quick-change strap system utilizing screw-in pins, users can effortlessly adapt the watch to their personal preferences. A Torx 6 screwdriver is necessary for removing the strap.

• Hazard 4 Heavy Water Diver BlackTie B GMT timepiece - White
• case

• Precision ensured by quartz movement
• Durable titanium watchcase
• Enhanced visibility with a large dial
• Easy-to-read clear digits
• Superior scratch resistance with sapphire glass
• Readable in low light thanks to tritium backlight
• Reliable under pressure, water resistant to 30 ATM
• Comfortable wear from its lightweight design
• Equipped with a diving bezel for underwater use
• Added security from the screw-down crown
• Comfortable fit provided by an ergonomic strap