Hazard 4 Heavy Water Diver BlackTie B Watch - Black/Silver

Engineered for extreme environments, the Heavy Water Diver BlackTie B watch combines a robust yet lightweight titanium case with water resistance up to 300 metres, tritium backlighting, and a high-precision Swiss movement. Perfectly suited for demanding conditions, both below the surface and on rugged terrain.

Powered by a Ronda 515 quartz movement and a Renata 371 battery, the watch boasts a robust 50mm case constructed from grade 2 titanium. This material ensures the design remains lightweight, exceptionally durable, and hypoallergenic.

Engineered with a remarkable 30 atmospheres water resistance, the timepiece is fully protected during dives up to 300 m as well as swimming. The fluted unidirectional diving bezel, featuring a tritium zero marker, together with a user-friendly screw-down crown, delivers precise timing for underwater adventures. The oversized crown is specially crafted for effortless adjustment when wearing gloves or operating underwater.

The dial stands out with prominent, highly legible military-inspired numerals created through 3D technology. A built-in 24-hour scale allows for quick reference of military time, while an inner ring of minute indices further enhances readability.

A practical date display feature presents the current day of the month directly on the dial.

Protection is provided by a scratch-resistant sapphire glass with an internal anti-reflective coating, ensuring the watch remains easy to read even in bright sunlight.

The hands, indices, and zero marker are equipped with tritium gas-filled microtubes that offer continuous, high-intensity illumination, requiring no user activation. The tritium tubes are elevated by 80% above the watch face, providing excellent visibility from multiple perspectives, not just when viewed straight on. Tritium backlighting guarantees that the dial remains legible even in complete darkness.

Tritium features a half-life of 12 years, so after 12 years, its brightness will be reduced to half of its original intensity.

Equipped with a sturdy rubber strap, the watch incorporates a grooved design with a map pattern and multiple moisture-wicking perforations to enhance airflow and minimize sweat buildup on the wrist. The selected material resists the harmful impact of moisture and sweat, rendering it suitable for a range of outdoor activities. A special locking mechanism on the strap ensures secure wear and guards against unintentional release.

Thanks to a quick-change system with screw-in pins, customizing the strap to fit the wearer’s preferences is straightforward. Detachment requires a Torx 6 screwdriver.

• Quartz-powered movement ensures reliable timekeeping
• Titanium case for enhanced durability and reduced weight
• Oversized dial maximizes visibility
• High-contrast numerals for clear readability
• Sapphire crystal lens provides superior scratch resistance
• Tritium illumination delivers consistent low-light visibility
• 30 ATM water resistance supports demanding aquatic activities
• Lightweight build offers comfortable wear through extended use
• Rotating dive bezel aids in precise underwater timing
• Screw-lock crown enhances water resistance and security
• Ergonomically designed strap improves fit and comfort

• Heavy Water Diver BlackTie B timepiece - Black/Silver
• case

Water sports: Exceptional water resistance combined with robust build quality renders the watch highly suitable for activities such as diving, swimming, snorkelling, and surfing.

Survival and outdoor: Engineered for shock and corrosion resistance, along with the ability to withstand extreme environmental conditions, the watch is a reliable companion for trekking, camping, and mountain climbing enthusiasts.