Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallThe Brellum Duobox Triple Calendar Moonphase Salmon is a 2025 limited-production automatic chronograph with a salmon-colored dial, full calendar, moonphase and day/night indication. It was reported in 316L stainless steel and titanium, with 33 salmon-dial watches across both versions. Its 41.8 mm case and 15.9 mm thickness make it a substantial, information-dense watch rather than a restrained dress piece.
What is the Brellum Duobox Triple Calendar Moonphase Salmon?
Brellum introduced the salmon-dial edition in 2025 as the Duobox Triple Calendar Moonphase LE Chronometer. Fratello lists the steel reference as DB.CH.938 and the titanium reference as DB.CH.939. The reported production limit of 33 applies to the salmon edition across the two case materials, not to 33 pieces of each reference. (Fratello, April 17, 2025; Monochrome Watches, 2025)
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
OLEVS Watch for Men Automatic Multi Calendar Moonphase with 3ATM Waterproof Leather Strap Business... | $168.80 | Buy on Amazon |
The watch pairs a chronograph with a pointer date, day and month displays, moonphase and day/night indication. Fratello describes a domed, multi-level opaline salmon dial with blue chronograph-seconds and moonphase details. That combination gives the dial considerable visual and functional density; it is intended for someone who wants the complications on display, not an especially minimal face.
Specifications
| Specification | Reported details |
|---|---|
| References and case options | DB.CH.938, 316L stainless steel; DB.CH.939, titanium (Fratello, 2025) |
| Case diameter | 41.8 mm (Fratello, 2025) |
| Lug-to-lug | 51.8 mm (Fratello, 2025) |
| Thickness | 15.9 mm (Fratello and Monochrome Watches, 2025) |
| Water resistance | 100 m stated rating (Fratello and Monochrome Watches, 2025) |
| Movement | Brellum BR-751 automatic chronograph, based on Valjoux 7751 architecture (Fratello and Monochrome Watches, 2025) |
| Movement figures | 25 jewels; 28,800 vph; 46-hour power reserve (Fratello and Monochrome Watches, 2025) |
| Chronometer status | COSC-certified BR-751, as reported by Fratello and Monochrome Watches (2025) |
| Crystals | Box-style sapphire front and display back, with anti-reflective coating (Fratello, 2025) |
| Strap and clasp | Black leather strap, described by Monochrome as alligator leather; deployant clasp matching the case material (Fratello and Monochrome Watches, 2025) |
| Edition size | 33 salmon-dial watches total (Fratello and Monochrome Watches, 2025) |
| Launch price | CHF 3,690 in steel; CHF 3,890 in titanium (Fratello and Monochrome Watches, 2025) |
These are specifications and launch figures published in 2025 product coverage, not independent measurements or tests. In particular, the 100 m figure is the reported water-resistance rating, not a result of testing here.
Recommended Free Tools
#1 Best Overall
- 【Multifunctional Design: Calendar & Moon Phase】Watch features a multi-functional design with a calendar and moon phase display, offering both practicality and style. Perfect for business professionals, it adds a touch of sophistication to any work or formal occasion.
- 【High-Quality Automatic Movement: Precision Timekeeping】Equipped with a high-quality automatic movement, this watch offers precise timekeeping without the need for batteries. Its self-winding mechanism ensures reliable accuracy, while the transparent case back reveals the exquisite craftsmanship of the mechanical movement, making it a true collector's piece.
- 【Durable Leather Strap & 3ATM Water Resistance】Crafted from premium leather, the strap offers exceptional durability and comfort for everyday wear. With 3ATM water resistance, it can handle splashes, rain, and handwashing, ensuring reliable performance in various situations.
- 【Perfect Gift Choice: Versatile for All Occasions】A stylish and versatile watch that makes the perfect gift for yourself, your family, or loved ones. Whether for a birthday, anniversary, or special occasion, this watch pairs effortlessly with any outfit and suits every setting, from casual to formal.
- 【Shop with Confidence: 30-Day Return & 24-Month Warranty】Shop with confidence knowing that we offer a 30-day hassle-free return policy and a 24-month warranty on all our automatic watches. Our dedicated customer service team is always ready to assist you with any questions or concerns, ensuring a seamless shopping experience.
Movement and functions
The BR-751 is reported as an automatic integrated cam-lever chronograph based on the Valjoux 7751. The underlying architecture supports the watch’s numerous displays; Brellum’s reported finishing includes perlage, Geneva stripes, blued screws and a 4N-coated rotor, visible through the display back. The movement is listed as COSC-certified, with 25 jewels, a frequency of 28,800 vibrations per hour and a 46-hour power reserve. (Fratello; Monochrome Watches)
- Chronograph: central chronograph seconds, a 30-minute counter and a 12-hour counter.
- Calendar: pointer date, plus day and month windows.
- Astronomical display: moonphase.
- Day/night: an additional indicator alongside the time and small seconds.
The listed time display includes hours, minutes and running small seconds. The calendar and moonphase make the dial more useful as a complication showcase, but also mean there is more to read and visually parse than on a conventional three-hand watch.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How large is it, and what are the case choices?
At a reported 41.8 mm across, 51.8 mm lug-to-lug and 15.9 mm thick, the Duobox has substantial wrist presence. The lug-to-lug measurement is especially relevant for fit, while the thickness reflects the space required by the automatic chronograph and calendar mechanism. Published dimensions do not establish how the watch will fit a particular wrist; trying it on is the surest way to judge that.
The steel and titanium versions differ in case material and reported launch price. Both were listed with a deployant clasp in the corresponding case material. The reports do not establish a weight comparison, so the material names alone should not be treated as a measured wearing-comfort difference.
What were the price and edition size?
Fratello and Monochrome reported 2025 launch prices of CHF 3,690 for the steel reference and CHF 3,890 for titanium, with 33 salmon-dial watches in total. These are historical launch prices, not verified current asking prices. Current availability, ordering status and resale values have not been established. Fratello reported a two-year warranty in 2025; buyers should confirm applicable terms with the seller because current warranty coverage was not verified. (Fratello; Monochrome Watches)
Who is this watch best suited to?
- Consider it if you want a limited salmon-dial chronograph with a full calendar and moonphase, value a display-back movement, and are comfortable with a large, busy watch.
- Look elsewhere if you prefer a thin case, a simple dial, or a watch whose current price and availability can be confirmed from the published launch information alone.
A later ice-blue version appeared in the same model family in Fratello’s March 2026 coverage, but it is a separate dial variant; that report does not change the salmon references or their 2025 edition figures. (Fratello, March 27, 2026)
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
