The Bronze Field Guide

Heimdallr H1 Bronze Tuna

HEIMDALLR-H1-BRONZE

The Heimdallr H1 Bronze Tuna is a current-production diver watch with a aluminium bronze case. At 160 g it sits among the heavier diver watches in the guide, and is priced well under the $599 median for the category.

All Heimdallr watchesBronze diver watchesAluminium bronzeDiversUnder $500
Price
$199
Alloy
Aluminium bronze
Weight
160 g (with bracelet)
Water resistance
300 m
Reference
HEIMDALLR-H1-BRONZE
Type
Diver
Case diameter
47.0 mm
Thickness
14.5 mm
Lug-to-lug
44.8 mm
Origin
China
Movement
Automatic
Caliber
Seiko NH35A
Power reserve
41 hours
Complications
Time only
Construction
Assembled
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Solid stainless steel bracelet
Crystal
Sapphire
Display back
No
Dial
Black
Dial colours
Black
Lume
C3 Super-LumiNova
Availability
Offered
Status
Current
Not published
Colour, Hardness, Surface treatment, Caseback, Bronze bracelet
Medium confidence Verified Jul 2026 Source: Heimdallr H1 Bronze listing
Facts are free to cite with a link.
See it in the interactive guide

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Frequently asked questions

What bronze alloy is the Heimdallr H1 Bronze Tuna?

The Heimdallr H1 Bronze Tuna has a aluminium bronze case. It is recorded at medium confidence pending a maker-stated alloy.

What size is the Heimdallr H1 Bronze Tuna?

It is 47.0 mm in diameter, 14.5 mm thick, 44.8 mm lug to lug, and water resistant to 300 m.

How much does the Heimdallr H1 Bronze Tuna weigh?

About 160 g (w/ bracelet).

How much does the Heimdallr H1 Bronze Tuna cost, and is it available?

It is current-production and lists from $199.

All bronze Heimdallr watches · Bronze diver watches · All 319 watches

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