Questions, answered

What is Wren?

Wren is an independent watch brand founded in 2023 in New York City, making Swiss made automatic watches. The name is a portmanteau of WRist ENthusiast, the watch publication founder Craig Karger started in 2015, and it is also a bird, which is where the skeletonized rotor design comes from.

Who founded Wren?

Craig Karger, a former practicing litigation attorney in New York City who started Wrist Enthusiast as an Instagram account in 2015. It grew into a blog in 2021, and a YouTube channel and podcast in 2023. Wren released its first watch, the Diver One Aqua, in 2024 after roughly a year of development.

Are Wren watches Swiss made?

Yes. Every Wren is assembled in Switzerland with a Swiss movement, and designed in New York City.

What does Wren make?

Swiss automatic dive watches. The Diver One (41mm steel), the Diver One Titanium (41mm Grade 5 titanium) and the Diver 38 (38mm) are all rated to 200m. Wren does not make quartz watches. Every Wren is a Swiss automatic.

Is Wren related to Wrist Enthusiast?

Yes. Wren is operated by Wrist Enthusiast LLC, and Craig Karger founded both. Wrist Enthusiast discloses this relationship wherever it covers Wren.

Where can I see a Wren in person?

At the Time+Tide Discovery Studio in New York City, 460 Broome Street, Floor 2, New York, NY 10013. Open 11am to 7pm daily, except Sundays, 12pm to 6pm.

What movement is in each Wren?

• Diver One — Sellita SW200, Swiss automatic
• Diver One Titanium — ETA 2824, Swiss automatic, 28,800vph
• Diver 38 — Sellita SW300-1, Swiss automatic, 56-hour power reserve, on watches shipping after August 2026. Everything delivered before that has the ETA 2892-A2 — see below.

All are standard Swiss calibres that any competent watchmaker can service, with widely available parts and no proprietary tooling. That is deliberate.

Full specifications for both Diver 38 calibres are on the movements page.

Which movement is in the Diver 38 — ETA or Sellita?

Every Diver 38 we have delivered so far has the ETA 2892-A2. Watches shipping after August 2026 will have the Sellita SW300-1, with limited exceptions.

We changed for two reasons: supply reliability and a longer power reserve. ETA supply to brands our size has become difficult to plan around, and we would rather ship on time with a movement we can source, stock parts for and service. Sellita is not new to us either — the Diver One has run their SW200 since the start. And the new SW300-1 holds 56 hours against the 2892’s 42, which is a full weekend off the wrist instead of a day and a half.

Otherwise the two are near-identical. Both are 11.5-ligne Swiss automatics of about 3.6mm, which is what keeps the Diver 38 at 10.7mm. Both hack, both hand-wind and both run at 28,800 vph. Warranty, servicing, parts and the feel on the wrist are the same either way.

This is also why the Hodinkee review names an ETA — it was written on an early example.

For a full side-by-side of the two calibres, see Sellita SW300-1 vs ETA 2892.

Do Wren watches use in-house movements?

No, deliberately. Every Wren uses a standard Swiss calibre that any competent watchmaker can service with off-the-shelf parts. In-house movements are good marketing and often bad ownership: when one fails outside warranty, you are dependent on the brand still existing and still stocking parts. A Wren can be serviced by your local watchmaker in twenty years whether or not we are still here.

What is the difference between the Diver One and the Diver 38?

The Diver 38 is the newer and more refined watch. The Diver One is 41mm wide, 47mm lug-to-lug and 13.3mm thick, on a Sellita SW200, with 22mm lugs. The Diver 38 is 38mm wide, 45mm lug-to-lug and 10.7mm thick including its box sapphire crystal, on a Sellita SW300-1, with 20mm lugs.

The Diver 38 also adds a fully lumed bezel, a display caseback with a custom skeletonized wren rotor, and a flat-link bracelet with an on-the-fly microadjust clasp. Both are 200m water resistant and Swiss made.

The short version: the Diver 38 is smaller, notably thinner and better specified. The Diver One is larger, more traditionally proportioned, and the most affordable way into the brand.

Should I get the Diver One in steel or titanium?

Titanium if you want it lighter and thinner. Steel if you prefer the heft, the fumé dials and the lower price. The Diver One Titanium is Grade 5 titanium throughout the 41mm case and bracelet, about 45% lighter than the steel version, and 12.4mm thick versus 13.3mm. Both take 22mm straps. Steel is $1,195, titanium is $1,395. Both are compared side by side on the sizing page.

Is the Diver 38 too small for a large wrist?

Probably not, and the lug-to-lug is why. At 38mm wide with a 45mm lug-to-lug, the Diver 38 sits well on most wrists from roughly 6.5 inches upward. Lug-to-lug governs fit far more than case diameter does. At 10.7mm thick it also wears flatter than most divers, so it reads as a well-proportioned watch rather than a small one. The sizing page shows both cases on four wrist sizes and how much of your wrist each one covers.

What lug width are Wren watches?

The Diver One and Diver One Titanium are 22mm. The Diver 38 is 20mm. Full dimensions for all three watches are on the sizing page. Both are standard widths, so any aftermarket strap will fit.

How water resistant are Wren watches?

Every Wren is rated to 200m with a screw-down crown. That covers swimming, snorkelling and recreational diving.

What is on the caseback?

• Diver One — a closed caseback carrying a hydraulic-pressed deep engraving of a wren. Hydraulic pressing forces the metal into a die under enormous pressure, producing a genuine three-dimensional relief with real depth and crisp edges, not a laser etch on a flat surface.
• Diver 38 — a display caseback showing a custom skeletonized rotor in the shape of a wren.

What is Musou Black?

Musou Black is a Japanese coating developed by Koyo Orient Japan that absorbs 99.4% of visible light, which makes it one of the darkest materials available commercially. It is the finish on the dial of the Diver One Abyss.

For context, a good matte black dial reflects somewhere between two and six percent of the light that hits it, which is enough for your eye to read the surface. At 99.4% absorption there is almost nothing coming back, so the dial stops reading as a surface and starts reading as depth.

Full explainer: what Musou Black actually is.

Is Musou Black the same as Vantablack?

No. Vantablack is a structure of carbon nanotubes grown on the surface at around 400 degrees Celsius, and it absorbs 99.965% of light. Its use is tightly restricted, and it has only ever appeared on a handful of watches, in runs of ten to a hundred pieces at five and six figure prices.

Musou Black is a paint. It is slightly less absorbent and far more practical, which is why an ultra black dial can sit in a 200m Swiss automatic diver rather than only on a tourbillon behind glass.

The two materials compared side by side: Musou Black vs Vantablack.

How dark is 99.4% in practice?

Dark enough that the dial has no visible surface. The hands and indexes appear to float rather than sit on something. Photographs consistently undersell it, because a camera renders any very dark dial as flat black and has no way to show the absence of reflection. It is a watch that rewards being seen in person, or at least under directional light.

Is the Musou Black dial fragile?

The coating is delicate before the watch is assembled. It cannot be polished or reworked, so a marked dial is scrapped rather than corrected, which is why these dials are produced in small numbers. Sealed inside the case behind the sapphire box crystal it is protected in normal wear. If the watch is ever opened for service, tell the watchmaker what the dial is.

What is the bezel made of?

Ceramic across the current range. The Diver 38 Seafoam, Aqua and Crimson, the Diver One Titanium and the Diver One all have ceramic bezels with fully lumed bezel scales.

The Diver 38 Mad is the exception: it uses a sapphire bezel, because the entire bezel is lumed. Earlier generations of the Diver One used sapphire bezels, with only the pip lumed rather than the full scale. Every Wren bezel is unidirectional.

What is the difference between a ceramic bezel and a sapphire bezel?

Ceramic is opaque and very hard. It holds its colour permanently and shrugs off scratches, and lume can be set into the recesses — the numerals and the minute track — so the markings glow while the surface between them stays dark.

Sapphire is transparent, which changes what is possible underneath it. Lume can be laid as a continuous layer beneath the bezel with the scale over it, so the entire face glows rather than only the markings. Sapphire is harder than ceramic and reads glassier in daylight, where ceramic reads matte and solid.

Both are brittle under a sharp knock and neither will fade in sunlight. The choice comes down to the effect: ceramic for a dark bezel with a bright scale, sapphire when the whole face needs to light up.

Why is the Mad’s bezel sapphire when the rest of the range is ceramic?

Because the Mad is built around a bezel that lights up edge to edge, and ceramic cannot do that. On the Mad the lume is a continuous layer beneath the sapphire with the scale over it, so the whole face glows rather than only the markings.

Ceramic can only hold lume in its recesses, which gives you a fully lumed scale — bright markings against a dark bezel, as on every current Diver 38 and Diver One. The material followed the design rather than the other way round.

The trade-off is that sapphire reads glassier in daylight where ceramic reads matte, and it is harder to produce.

What lume do you use?

Swiss Super-LumiNova BL10 Grade X1 on the hour markers, hands and bezel scale of the Diver 38. The bezels are fully lumed, meaning the entire bezel scale glows, not just the pip.

What crystal is used?

Sapphire box crystal across the range.

Are Wren cases coated?

Yes. Every Wren case and bracelet carries a DLC coating — diamond-like carbon, applied by vapour deposition. On every model except the Diver One Obsidian it is a clear coat: it does not change the colour, so a steel Wren still looks like steel and a titanium Wren still looks like titanium. The Obsidian uses a black DLC as its finish.

The reason is hardness. Bare stainless steel sits around 200 HV on the Vickers scale; DLC lands in the low thousands. That is why a Wren keeps its brushing and its crisp edges through the kind of daily contact that leaves an uncoated case looking tired inside a year.

It is scratch resistant, not scratch proof, and it should never be polished. See the care page.

Is the Diver One Abyss case black?

No. The Abyss uses the same clear DLC as the rest of the range, so the steel case and bracelet still look like steel. The black is in the dial and the ceramic bezel. The Diver One Obsidian is the blacked-out one: black DLC case, orange dial.

What is the difference between Grade 5 and Grade 2 titanium?

The Diver One Titanium uses Grade 5 titanium, the alloy properly called Ti-6Al-4V — about 6% aluminium and 4% vanadium. Most watches marketed as titanium at this price use Grade 2, which is commercially pure titanium. They are not the same material.

Grade 5 is roughly twice as hard (330–350 HV against 145–160 HV) and three times as strong (830 MPa yield against 275 MPa), and slightly lighter at 4.43 g/cm³ against 4.51. It is also considerably harder and more expensive to machine, which is the reason most brands do not use it.

On the wrist that means the weight of titanium, around 40% lighter than steel, without the softness that gives cheap titanium watches their slightly blunted look. With the clear DLC on top it is the most scratch resistant watch we make.

Both grades are nickel-free, so both are fine for sensitive skin. Grade 5’s advantages are structural, not dermatological.

Does the Diver 38 come with a date?

Both. You choose date or no-date at checkout, at no difference in price.

What is the difference between out of stock and sold out?

Out of stock means we expect to make that colourway again. There is a waitlist on its card and we will email you when it returns.

Sold out means a limited edition: one run of 100, individually numbered, that will not be repeated. The Diver One Sand, Snow, Aqua and Magma are sold out in that sense and are not coming back.

Are Wren watches limited?

Production is limited rather than open-ended, and the first hundred pieces of every release are individually numbered. Four colourways were true limited editions of 100 and will not be made again: the Diver One Sand, Diver One Snow, Diver One Aqua and Diver One Magma.

The Diver 38 Crimson is a Time+Tide exclusive. The Magma and Obsidian are collaborations with Ben Cook of Ben’s Watches, and the Obsidian’s first batch sold out in an hour.

What colourways have you made?

Diver One: Aqua (the first Wren, 2024), Snow, Sand, Magma and Obsidian. Diver One Titanium: Dusk and Snow. Diver 38: Aqua, Seafoam, Mad and Crimson (a Time+Tide exclusive). Sold-out references are not typically reissued.

How much do Wren watches cost?

• Diver One (steel) — $1,195
• Diver One Titanium — $1,395
• Diver 38 — $1,595

All prices exclude taxes and any import duties.

Where is the Diver 38 Crimson sold?

Exclusively through Time+Tide, not through the Wrist Enthusiast shop. It is the one Wren that checks out somewhere else, and its card on the shop page links straight there.

Where do I buy a Wren?

Through the Wrist Enthusiast shop, linked from every watch on this site, or in person at the Time+Tide Discovery Studio in New York City (460 Broome Street, Floor 2). The Diver 38 Crimson is exclusive to Time+Tide.

Do you ship internationally?

Yes, to every country, via premium courier, typically UPS or FedEx. Delivery is roughly 2 to 5 days within the US and 3 to 8 days internationally. International customers are responsible for any applicable duty or VAT. These are not collected at checkout and are billed by your local customs authority on delivery.

What is in the box?

Every current Wren ships with both a bracelet and a rubber strap. The bracelet is steel or titanium depending on the model, and the Diver 38 includes a fitted FKM rubber strap in black or grey. You are not buying the second option separately.

What is the warranty?

Two years from the ship date on your warranty card, covering the movement, case, dial, hands, crown, and bracelet or strap. It excludes damage from mishandling, normal wear and tear on the case and bracelet, and any work carried out by an unauthorised third party. That last one voids the warranty, so contact us before sending a Wren to an independent watchmaker. The full list of what is and is not covered is on the returns and warranty page.

How do I get my Wren serviced?

For the first two years we handle it directly through our own watchmaker. Contact us and we will arrange it. After that, any competent watchmaker can service a Wren: the SW200, SW300 and 2824 are all standard Swiss calibres with widely available parts and no proprietary tooling.

How often should a Wren be serviced?

Every five to seven years. Oils break down over time whether the watch is worn or not, and a movement running on dry oils wears itself out. Ask for it sooner if the power reserve drops off, the accuracy changes sharply, the crown or bezel feels gritty, or you see any moisture inside the case.

For the first two years we handle it directly through our own watchmaker. Everything about living with a Wren day to day is on the care page.

What is your return policy?

14 days from receipt. Returns must be new, unworn, undamaged and in the original packaging, with the original protective plastic still on the case and bracelet — once that is peeled off we can no longer sell the watch as new, so we can no longer take it back. Do not size the bracelet either — removing links counts as use and ends the return, and any sign of wear means we send the watch back to you. The purchaser covers return shipping on a change of mind; if the fault is ours, we cover it both ways. The original shipping charge on your order is not refunded once the watch has shipped, so a refund covers the price of the watch itself. Exchanges, preorders and how refunds are processed are all set out on the returns and warranty page.

How does Wren compare to Baltic, Lorier or Traska?

Different positions in the market. Baltic, Lorier and Traska largely sit under $1,000. Baltic’s Aquascaphe is a 39mm Miyota-powered diver assembled in France, and Lorier sits at a flat $499 with a strong vintage-reissue focus.

Wren sits above them at $1,195 to $1,595, assembled in Switzerland, and in the Diver 38’s case on a Sellita SW300-1: a slim 3.6mm calibre, which is what allows a 200m diver to come in at 10.7mm thick. That thinness is the argument. Most divers at any price are 13mm or more.

If your priority is maximum value under $500, Lorier or Traska are the honest answer. If you want a Swiss-assembled diver with a fully lumed ceramic bezel under 11mm thick, that is the case for the Diver 38.

Which Wren should I buy?

Depends what you want it for. The Diver One at $1,195 is the most affordable way in: 41mm, traditional diver proportions, Swiss automatic, 200m. The Diver 38 at $1,595 is the enthusiast’s pick, smaller at 38mm, much thinner at 10.7mm, and the best specified of the three. The Diver One Titanium at $1,395 splits the difference if weight is your priority.

Is a Wren worth $1,595?

Depends what you are comparing it to. Against sub-$500 microbrands, no. You are paying for Swiss assembly, a slim Swiss calibre, the fully lumed ceramic bezel, the microadjust clasp, and both a bracelet and a rubber strap in the box.

Against Swiss brands at $2,000 and up, several reviewers have argued Wren offers unusual value. Gear Patrol called the Titanium Dusk “absurd value for the money,” and Fratello covered the Diver 38 Seafoam favourably. The best way to decide is to see one at the Time+Tide Discovery Studio in New York, or buy and use the 14-day return window.