The Heimdallr H1 Bronze Tuna Can delivers professional-grade diving capability in a distinctive 47mm case. Built around the reliable NH35 automatic movement, this timepiece features a ceramic bezel for scratch resistance and 30ATM water resistance suitable for serious water sports. The sapphire crystal with C3 luminous coating ensures visibility in low-light conditions, while the bronze case develops a unique patina over time. The robust "tuna can" design provides exceptional wrist presence and durability for demanding environments. An ideal choice for collectors and divers seeking authentic tool-watch performance with distinctive aesthetics.

Specifications

Movement
Caliber: Seiko NH35A Automatic
Functions: Hours, Minutes, Seconds, Date
Hacking & Hand-Winding: Yes
Power Reserve: Approx. 41 hours
Beat Rate: 21,600 vph

Case & Construction
Case Material: Aluminium Bronze
Crystal: Sapphire Crystal
Bezel Insert: Ceramic, Unidirectional
Crown: Screw-Down
Water Resistance: 300m / 30 ATM
Luminous: C3 Super-LumiNova

Dial & Strap
Dial Color: Black
Strap: Solid Stainless Steel (Heart Grain Finish)
Lug Width: 22mm

Dimensions
Diameter: 47mm (without crown)
Height: 14.5mm
Lug-to-Lug: 44.8mm
Weight: 160g

Warranty
Duration: 2 Years

Key Features

• Aluminium Bronze Case – Strong, corrosion-resistant, develops unique patina

• 300m Water Resistance – Professional dive rating with screw-down crown

• Ceramic Bezel – Fade-proof and scratch-resistant

• Sapphire Crystal – Highly scratch-resistant for lasting clarity

• Seiko NH35A Movement – Proven accuracy with hacking and hand-winding

• C3 Super-LumiNova – High-brightness glow for low-light legibility

• Optimized Proportions – 44.8mm lug-to-lug ensures stable, comfortable fit