The Hazard 4 Titanium Bracelet is a Grade 2 titanium link bracelet custom designed for the Heavy Water Diver 50mm tritium dive watch. At 3.2 oz in its longest configuration, it weighs roughly half of a comparable steel bracelet while remaining 100% hypoallergenic — a meaningful difference on a watch this size. The curved-H link geometry pivots around the wrist's natural contours, and the bracelet ships in Black or Silver to match the watch's aesthetic. Lug width is 24mm. Available in Black and Silver variants.

Who this is for

• Heavy Water Diver owners who want a metal bracelet that matches the watch's tough, modern build without the weight penalty of a steel alternative.
• Wearers with metal sensitivities who need a hypoallergenic option that holds up to daily wear, water exposure, and active use.
• Users who want a personalized look — the reversible pin-cover tubes accept laser engraving and can be anodized or coated in accent colors.

Construction and materials

The links are machined from Grade 2 titanium. All machined edges have been slightly rounded to eliminate sharp contact points without producing a soft, over-finished appearance. The deployant clasp is steel, chosen for fatigue resilience, and carries a Hazard 4 logo etch on the face with "TITANIUM" marked on the underside. Side-buttons and a thumb safety bar secure the clasp during wear.

The pin covers between the 24mm lugs are marked "TITANIUM" on one face and blank on the reverse, so the user can choose which side faces out. The covers also accept laser engraving and can be anodized or coated in different colors. Attachment to the watch uses a custom Hazard 4 clover-pin (watch pins sold separately; installation requires a Torx 6 screwdriver, not included). Blue Loctite solution is included and should be applied to the screws during assembly for long-term secure fit.

Fit and adjustment

The primary length adjustment uses three hairpin links on each side of the clasp, accommodating a wide range of wrist sizes. The deployant clasp adds a 3-position micro-adjustment for dialing in an exact fit. Overall bracelet dimensions are approximately 7.1 in. long by 1 in. wide by 0.2 in. deep (18 x 2.5 x 0.5 cm); worn circumference with watch is approximately 10.75 in. For wrists requiring further shortening, a watchmaker or jeweler can remove additional links.

Packaging

The bracelet ships in a black presentation box with a pillow and bracelet retainers. Removable pin covers are packed separately in a flask included in the box.

Specifications

Frequently asked questions

Will this bracelet fit my Heavy Water Diver without modification?

It depends on your wrist size. Three hairpin links per side plus a 3-position micro-adjust clasp accommodate most wrist circumferences straight out of the box. For smaller wrists, a watchmaker can remove additional links. The overall bracelet measures approximately 10.75 in. around the wrist when worn with the watch.

Do I need special tools to install the bracelet?

Yes. Installation requires a Torx 6 screwdriver or bit, which is not included. The package includes Blue Loctite solution; apply it to the screws during assembly to ensure a secure long-term fit. A strap-change instruction guide is available on the Hazard 4 website.

Are watch pins included?

No. Watch pins are sold separately. The bracelet uses a custom Hazard 4 clover-pin for attachment to the watch lugs.

Can I customize the pin-cover tubes?

Yes. The pin-cover tubes between the lugs are reversible — one face is marked "TITANIUM" and the other is blank. They also accept laser engraving and can be anodized or coated in different colors for accent, giving you options to personalize the bracelet beyond the standard Black and Silver finishes.

Is Grade 2 titanium suitable for diving and daily wear?

Grade 2 titanium is a commercially pure titanium alloy widely used in marine and medical applications for its corrosion resistance and hypoallergenic properties. At 3.2 oz, it adds substantially less mass to the wrist than a comparable steel bracelet for a 50mm watch, making it practical for extended daily wear alongside a dive watch.

Can this bracelet fit other 24mm watches?

It depends. The lug width is 24mm and the clover-pin is a custom Hazard 4 design, so direct fit to other brands is not guaranteed. One reviewer has noted successful installation on an Apple Watch Ultra 2 using 24mm adapters, but compatibility with other watches is not confirmed. Contact us if you have questions about a specific application.