Wren Diver One Abyss: A Swiss Dive Watch With a Dial That Absorbs 99.4% of Light

Image Courtesy of Wren Watches

Since the Diver One launched in 2024, the request Wren has heard most from its owners is for a black dial. The brand’s answer is the Wren Diver One Abyss, a Swiss-made automatic dive watch with a dial finished in Musou Black, the Japanese ultra-black coating that absorbs 99.4 percent of visible light. It was priced at $1,195, and the first run was limited to 100 individually numbered pieces.

Everything cut or printed on that dial is aqua: the indices, minute track, hands, wren logo, wordmark and depth rating. The surface behind them barely registers as a surface at all.

A Black Dial Wren Owners Asked For

A black dial is one of the easiest watches to make and one of the hardest to make memorable. Wren founder Craig Karger says the brand wasn’t going to add one just to fill a slot in the range. The approach echoes the Diver 38 Mad, which started from a familiar white dial and earned its identity through a sapphire bezel. For the Abyss, the twist is the dial itself. “There’s no such thing as a black dial that’s too black for us,” Karger says.

The Abyss is the newest colorway of the steel Diver One, the model that launched Wren in 2024.

Musou Black on the Wren Diver One Abyss

Paint, lacquer and PVD all bounce back enough light that a “black” dial can read as charcoal, with visible sheen and texture. Musou Black, developed in 2020 by Koyo Orient Japan, is a water-based acrylic engineered to trap light instead of returning it. Under an anti-reflective sapphire box crystal, Wren says the effect goes past “very dark” into absence. The edge between dial and case side disappears, and tilting the watch under a lamp sends nothing sliding across the surface. The coating also can’t be polished or reworked once applied, which is why these dials are made in small numbers.

Image Courtesy of Wren Watches

The clearest demonstration is the side-by-side in Wren’s press kit, where the Abyss sits next to a conventional black-dialed field watch from a well-known Swiss brand under identical light. Wren’s description is that the conventional dial reads as a dark gray surface with sheen and texture, while the Abyss registers as an opening rather than a face. The company invites reviewers to run the same test with any black dial they own.

The sandwich construction helps, too. Rather than applying markers, Wren cuts them through the Musou Black top plate to a lume layer underneath. Nothing sits proud of the surface to catch a highlight or throw a shadow, so the markings read as openings in the dial rather than objects on it. Wren has also published a technical explainer on the material, including how it differs from Vantablack.

Aqua on Everything Else

Wren’s first watch, the Diver One Aqua, sold out on the strength of a teal-aqua fumé dial, and the color has run through the brand since. The Abyss flips that relationship. The Aqua was a colored dial with cream markers. The Abyss is a dial you can’t really see, with aqua on every element in front of it.

Image Courtesy of Wren Watches

That carries to the bezel: black ceramic, unidirectional, 120-click, with the entire 60-minute scale lumed instead of a single pip at twelve. Set it before a dive and the elapsed time stays readable in the dark from any starting point. The lume is Swiss Super-LumiNova, closely matched to its daylight color, so the watch looks like itself in the dark instead of turning into a different one.

Case, Bracelet and Movement

The case is the Diver One case Wren has used since 2024. It’s 41mm in diameter, 47mm lug to lug and 13.3mm thick including the domed sapphire box crystal, with 22mm between the lugs, a signed screw-down crown and 200 meters of water resistance. The anti-reflective coating matters more here than on most watches, since reflection is the one thing this dial is built to eliminate.

Image Courtesy of Wren Watches

Case and bracelet are stainless steel under a clear DLC coating, applied for hardness and scratch resistance rather than color, so the steel still looks like steel. The flat-link bracelet comes in the box alongside a black FKM rubber strap. For a much darker take on DLC in a dive watch, see our look at the Nodus Sector Deep Pioneer NVG.

On the back, the solid caseback carries a raised, polished wren emblem, with the model name and that piece’s individual number engraved around it. The example pictured is No. 099 of 100. Inside is a Sellita SW200 automatic with a 38-hour power reserve.

Image Courtesy of Wren Watches

Price and Availability

The Diver One Abyss was priced at $1,195 USD and went on sale August 24, 2026 through the Wrist Enthusiast shop. Every Wren carries a two-year warranty from the date of shipment and a 14-day return window, and Wren covers shipping both ways on a valid warranty claim. As of writing, the shop listing shows the Abyss as sold out, and Wren says no future batches are currently in production.

Wren is a New York independent brand founded in 2023 by the team behind Wrist Enthusiast, and its name comes from WRist ENthusiast. Looking for more independent dive watches? See our guide to the best microbrand watches and our look at the Squale SUB-37 Legend.

Key specs

• Case: 41mm diameter, 47mm lug to lug, 13.3mm thick, 22mm lug width

• Material: Stainless steel with clear DLC coating

• Water resistance: 200m

• Crystal: Sapphire box, anti-reflective coated

• Dial: Musou Black sandwich dial, 99.4% light absorption, aqua markings

• Bezel: Black ceramic, unidirectional, 120-click, fully lumed 60-minute scale

• Movement: Sellita SW200 automatic, 38-hour power reserve

• Included: Flat-link bracelet and black FKM rubber strap

• Production: First run of 100, individually numbered

• Price: $1,195 USD

Image Courtesy of Wren Watches

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