Introducing the Mu:n Orion Moonphase Watch, a piece that merges technical sophistication with striking design. Founded in 2021, Mu:n (pronounced ‘moon’) is a French independent watchmaker that specializes in moonphase complications, a focus that’s clearly reflected in their newest creation. The Orion, inspired by NASA’s Artemis program and the Orion spacecraft, promises to be a visually stunning addition to any collection. 
Initially launched as a Kickstarter project, the Orion is now part of Mu:n’s 2025 catalog and features a remarkably realistic moonphase display that has been created using cutting-edge femtosecond laser technology.
The Mu:n Orion’s 316L stainless steel case boasts a brushed finish with elegant, polished bevels that accentuate its sleek silhouette. The case is a perfect example of subtle design with its traditional profile and delicate polished edges along the lugs and bezel. The dial is protected by a gently domed sapphire crystal, while the screw-down caseback ensures durability. At 38mm in diameter and 10.6mm thick, the Orion wears larger than most watches of its size, thanks to its thin bezel and compact lug-to-lug measurement of 46mm
. The watch weighs just 57 grams, making it a lightweight yet substantial presence on the wrist.
Mu:n offers the Orion in several colorways, including limited edition blue and green versions, each with only 200 pieces available. The core collection includes gray, white, and brown models. The gray version, which we’re highlighting here, features a striking midnight blue dial with white text and accents. The dial itself is a masterpiece of design, featuring a three-part structure with a textured grain ring, a central elevated section, and a contrasting matte minute track. The hour markers are applied to the minute track, giving them a semi-floating appearance.
At the heart of the Orion lies a stunning moonphase complication that steals the show. This realistic moon disc, produced in collaboration with AJS Production, is made with a Super-LumiNova sticker applied to a thin metal base. 
The use of femtosecond laser technology enables Mu:n to etch an incredibly detailed moon phase that looks just as it does in the night sky, right down to the smallest details. The result is a moonphase complication that offers both visual intrigue and technical precision.
Powering the Orion is the Swiss-made Sellita Caliber SW288 manual-wind movement, a modified version of the SW200 with a moonphase complication. It operates at 28,800 vibrations per hour and offers a 42-hour power reserve. Though the movement is not automatic, it’s a smart design choice for keeping the watch slim while still offering accurate timekeeping. The movement’s upper bridges are adorned with a subtle linear motif, adding a contemporary touch to the otherwise traditional architecture.
The Mu:n Orion comes paired with a two-piece calfskin leather strap, made from high-quality, French milk-fed leather
. Buyers can also choose a five-link stainless steel bracelet for an additional charge. The leather strap features a tang-style buckle with Mu:n’s logo and is available in various colors. Whether you opt for the leather strap or the stainless steel bracelet, the Orion’s aesthetic is complemented by its premium materials and design choices.
While the price tag of 1,340 CHF (about $1,675 USD) may seem steep, it’s well worth it for a timepiece that blends traditional mechanical watchmaking with modern technology and artistic flair. For those in the market for a moonphase watch, the Orion offers an exceptional blend of visual appeal, craftsmanship, and a relatively accessible price point.