Seiko debuts new limited edition Marinemaster "Save the Ocean" diver inspired by mangrove forests
Seiko has unveiled the new Prospex Marinemaster “Save the Ocean” Limited Edition HBF003J1, a 300-meter dive watch inspired by the rich green hues of mangrove forests, and it's limited to just 900 pieces worldwide.
The Marinemaster has been one of Seiko’s more serious dive-watch offerings since the company revived the lineup three years ago with a trio of compact divers inspired by the brand’s 1968 professional dive watch. Earlier this year, Seiko gave the flagship model a big update with the HBF001, swapping in its newer Caliber 8L45 movement and introducing a clever new clasp with up to 16mm of adjustment.
At first glance, the new limited edition looks a lot like the HBC001 that arrived in April. But while that model featured a green dial with a matching bezel, the limited edition distinguishes itself with a two-tone color scheme, featuring a green dial with a black ceramic bezel.
The deep green dial has a subtle sunburst effect that shifts with the light. Seiko says the dial is meant to evoke the vibrant greens of mangrove forests, which thrive where freshwater and seawater meet and support remarkably rich ecosystems.
The oversized LumiBrite-filled markers and broad hands keep things legible and give the watch the unmistakable look of a proper Seiko diver, while the pink-gold-colored seconds hand adds a small flash of contrast.
The HBF003J1 is essentially the same watch as the HBF001 / HBF002 as far as dimensions and specs are concerned. It offers a 42.6mm stainless steel case with a 49.3mm lug-to-lug measurement and 14.1mm thickness, paired with a sapphire crystal and 300-meter water resistance.
On the inside, the watch is powered by Seiko’s updated automatic Caliber 8L45, which offers around 72 hours of power reserve and an accuracy rating of +10 to -5 seconds per day.
Pricing & Availability
Seiko's Marinemaster 1968 Heritage “Save the Ocean” Limited Edition HBF003J1 will go on sale in the US, Japan, the UK, and the EU in November. It's limited to 9,000 pieces worldwide (with 300 pieces reserved for Japan) and priced at ¥506,000 / £3,300 / €3,800.
Seiko Prospex Marinemaster HBF003J1 specifications
- Limited edition: 900 pieces worldwide; 300 reserved for Japan
- Movement: Seiko Caliber 8L45 automatic, with manual winding
- Power reserve: Approximately 72 hours
- Accuracy: +10/-5 seconds per day
- Jewels: 35
- Frequency: 28,800 vibrations per hour (4Hz)
- Functions: Hours, minutes, seconds, date, stop-seconds function
- Case material: Stainless steel
- Case diameter: 42.6mm
- Case thickness: 14.1mm
- Lug-to-lug: 49.3mm
- Crystal: Dual-curved sapphire with anti-reflective coating on the inner surface
- Bezel: Unidirectional rotating stainless steel bezel with ceramic insert
- Dial: Mangrove-inspired green with LumiBrite hands and indices
- Seconds hand: Pink-gold-colored
- Bracelet: Stainless steel
- Clasp: Three-fold clasp with push-button release and slide adjuster
- Clasp adjustment: Up to 16mm in 2mm increments
- Water resistance: 300 meters / 1,000 feet, diver's
- Magnetic resistance: 4,800 A/m
- Crown: Screw-down
- Caseback: Screw caseback with limited-edition designation and individual serial number
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