This Dive Watch Icon Has Never Looked More Daring

It’s come a long way since its 1960s origins.

Close-up of a black Doxa dive watch with a textured bezel and crown, featuring a mint green dial labeled "SUB 300 seafoam" with a date window showing the number 16. The bezel has white numerals and markings for diving time. The watch case has a marbled pattern.

Published 3 hours ago

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There are only a handful of dive watches that have truly reached iconic status. The Rolex Submariner. The Omega Seamaster. The Blancpain Fifty Fathoms. And right there, near the top, has to be the Doxa Sub 300.

Making its debut in 1967 as a dedicated professional tool, the Sub 300 stood out from the get-go. It abandoned the more everyday stylings of its competition in exchange for a design that more closely resembled a piece of diving equipment, which is what it was.

Stainless steel wristwatch with a bright orange dial, black Roman numeral hour markers, and a date window at the 3 o'clock position. The watch has a rotating bezel with black and orange minute markers and a metal link bracelet. The dial is marked with "DOXA automatic," "SUB 300 professional," and "SWISS MADE." The hour and minute hands are black with luminous inserts. — The Doxa Sub 300 is unquestionably one of the most iconic dive watches ever made.

Its unique dual-function bezel not only featured a 60-minute scale but also a decompression timer as an additional tool for divers, while its most recognizable trait was its bright-orange bezel, originally conceived to enhance underwater legibility. (Ironically, the opposite turned out to be the case, as orange is one of the first colors to disappear as you descend into the depths, but the style stuck around nevertheless.)

Today, Doxa boasts an entire range of dive watches, all derived from the original Sub 300. The most unique has to be the Sub 300 Carbon, which maintains the form factor of the original but exchanges its stainless steel case material for lightweight, futuristic forged carbon fiber.

Now, Doxa has debuted a new, limited-edition Sub 300 Carbon that is arguably the brand’s most daring diver yet.

Black DOXA SUB 300 Seafoam automatic watch with a mint green dial, black bezel with white markings, and black rubber strap on a gray textured surface. — Has the Sub 300 ever looked more hypermodern than this?

Mint condition

Doxa’s use of color is well-documented, with its current line featuring not only the original “Professional” orange but also other bright colors that have also become signatures for the brand, such as “Divingstar” yellow and “Aquamarine” turquoise.

The latest is “Seafoam,” a minty green shade that makes the perfect contemporary match for the Sub 300 Carbon’s matte-black construction. The new color appears on a sunray dial, with black accents for the hands, indices and dial printing.

Black Doxa SUB 300 Seafoam automatic watch with a textured black bezel featuring white numerals and markers, a mint green dial with black and white hour markers and hands, and a black strap, displayed on a gray textured surface. — The Seafoam dial color is an exclusive color for Watches of Switzerland.

The fresh look is the result of a collaboration with retail giant Watches of Switzerland, and it’s honestly pretty timely. Earlier this year, I wrote about how mint green was shaping up to be the watch color of the year for 2025, and this striking new collab adds more evidence to the pile.

In addition to the very cool and attractive new dial color, there is one unique feature on this watch that you won’t find on a regular Doxa Sub 300 Carbon.

The watch comes with two straps. One is a black integrated FKM rubber strap with a black DLC stainless steel folding clasp, complete with a diving extension. It’s the same kind of rubber strap that comes with the standard Sub 300 Carbon.

A DOXA Sub 300 Seafoam wristwatch with a mint green dial and matching mint green NATO strap. The watch has a black textured bezel with white markings and black hour markers and hands. It is placed on a dark textured surface with a thick black braided rope partially visible. — In addition to the black rubber strap, the watch includes a NATO strap in Seafoam to match the dial.

More unique is the second strap included with the watch. It is a nylon NATO strap in the same Seafoam shade as the dial. NATO straps aren’t normally available for the Sub 300 Carbon — or most Doxas, really — so this color-matched option feels particularly special.

Outside of the extra NATO and a custom caseback featuring the Watches of Switzerland logo and the limited-edition number, this is your typical Sub 300 Carbon. You still get a titanium inner container and caseback and a 42.5mm outer forged carbon case.

A screw-down crown helps to provide 300m of water resistance, while the movement remains a COSC-certified and Doxa-decorated ETA 2824 automatic (or, presumably, the Sellita equivalent — Doxa doesn’t specify). Finally, the trademark domed sapphire crystal beefs the thickness up to a thinner-than-it-sounds 13.4mm.

The black titanium caseback features Watches of Switzerland branding along with the limited-edition number from 1 – 100.

Doxa

Pricing and availability

There are just a few months left in 2025, so Doxa is getting its mint green watch in just under the wire to capitalize on the year’s hottest trend. And I have to say, it’s one of the better-looking takes I’ve seen on the color. Calling the color “Seafoam” is a bit of genius, too, given Doxa’s aquatic identity.

Just 100 individually numbered examples of the Doxa Sub 300 Carbon Seafoam are available, all of which can only be purchased from Watches of Switzerland for $3,990.

Black Doxa Sub 300 Seafoam automatic watch with a textured black bezel and case, featuring a seafoam green dial with black and white hour markers, black and white hands, a date window at 3 o'clock, and a black rubber strap.

Doxa Sub 300 Carbon Seafoam

Specs

Case Size	42.5mm
Movement	ETA Cal. 2824 automatic
Water Resistance	300m

$3,990 at Doxa

About the Author:

Johnny Brayson is an editor at Gear Patrol mostly covering watches. He enjoys watches that are packed with blink-and-you’ll-miss-’em details and believes nearly every watch could stand to be a tad smaller.

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