Spinnaker Dumas Automatic Ref. SP-5081-CC (White Edition)
Dive Watch / Professional Tool Watch · Spinnaker (owned by Dartmouth Brands Ltd). Spinnaker is a mid-range/affordable 'Microbrand-style' enthusiast brand known for nautical-themed tool watches with high value-for-money specifications.
Period: Neo-Vintage / 1970s Inspired. It features an octagonal 'cushion' case and bold color blocking reminiscent of the vintage divers from the tool watch era, specifically influenced by diving pioneer Frédéric Dumas.
Type
Dive Watch / Professional Tool Watch
Brand
Spinnaker (owned by Dartmouth Brands Ltd). Spinnaker is a mid-range/affordable 'Microbrand-style' enthusiast brand known for nautical-themed tool watches with high value-for-money specifications.
Movement
Automatic, Seiko NH35 caliber. It features 24 jewels, a frequency of 21,600 bph (3Hz), and a power reserve of approximately 41 hours. It includes hacking and hand-winding capabilities.
Dimensions
Case Diameter: 44mm; Thickness: 15mm; Lug-to-Lug: 48mm; Lug Width: 22mm. Despite the 44mm diameter, the short lug-to-lug distance makes it wear more compactly than standard 44mm round watches.
Description
The Spinnaker Dumas is an unapologetically bold dive watch that pays tribute to the golden era of underwater exploration. Named after the legendary diver Frédéric Dumas, its octagonal case design and high-contrast 'Plongeur' hands prioritize utility and legibility. The watch presents a heavy, solid feel on the wrist, characterized by its sharp angles and distinct 1970s diver silhouette.
Key Features
Octagonal 44mm case, oversized red minute hand for tracking decompression/dive times, glass-covered luminescent bezel, and the use of the reliable workhorse NH35 movement.
Dial Description
Matte White dial with applied circular and rectangular indices. Features a prominent oversized red 'Plongeur' style minute hand for high dive visibility, a black baton hour hand, and a lollipop seconds hand. Inner minute track with 13-24 hour military markings and a date window at 3 o'clock.
Case Material
316L Marine Grade Stainless Steel with a fully brushed/satin finish to minimize glare and highlight the industrial tool aesthetic.
Crystal Type
Scratch-resistant flat Sapphire Crystal with anti-reflective (AR) coating for superior legibility under direct light.
Bezel Details
Unidirectional 120-click rotating bezel with a Mineral Glass insert. The insert is dual-toned (Dark Blue/Navy and White) and features fully luminescent markings including a 60-minute dive scale.
Crown & Pushers
Large screw-down crown with knurled texture for grip under water; features an embossed Spinnaker 'sail' logo. Protected by integrated heavy-duty crown guards.
Bracelet or Strap
Integrated stainless steel three-link bracelet with a brushed finish. Features a folding deployment clasp with a safety lock and push-button release.
Caseback Details
Exhibition/Display screw-down caseback, allowing a view of the Seiko NH35 movement and the custom Spinnaker-branded rotor. Engraved with model information and water resistance rating.
Movement Type
Automatic, Seiko NH35 caliber. It features 24 jewels, a frequency of 21,600 bph (3Hz), and a power reserve of approximately 41 hours. It includes hacking and hand-winding capabilities.
Water Resistance
300 Meters (1000 FT / 30 ATM). Suitable for professional marine activity and serious surface water sports, but not intended for deep-sea saturation diving.
Origin & Provenance
Japanese Movement (Seiko NH35) with overall assembly and manufacturing traditionally handled in Hong Kong/China. The brand is British-owned.
Age Estimate
Modern (circa 2019 - Present). This specific colorway and the updated integrated bracelet design indicate a more recent production batch within the Dumas line.
Cultural Significance
A favorite in the 'Affordable Luxury' and microbrand community, the Dumas demonstrates how enthusiast-led brands can revitalize niche vintage case shapes that major heritage brands often overlook.
Condition Notes
Appears to be in 'Excellent' to 'Mint' condition based on the studio stock photo provided. In a pre-owned state, buyers should check the mineral glass bezel for chips and the brushed surfaces for 'desk diving' scratches.
Value Estimate
MSRP: ~$400–$500 USD. Secondary market value: $250–$350 USD depending on condition and inclusion of original packaging.
Care & Maintenance
Recommended service every 5 years for the movement; gaskets should be pressure tested every 2 years if used for swimming/diving. Rinse with fresh water after salt-water exposure.
Similar Watches
Seiko 'Samurai' (similar angular case), Doxa SUB 300 (iconic 1970s cushion case), and Citizen Promaster Diver (comparable tool-watch utility).
Interesting Facts
The watch is a tribute to Frédéric Dumas, who was a close colleague of Jacques Cousteau and a key figure in the development of the Aqua-Lung and early recreational scuba diving.