Winter came to the Moonswatch universe — and it arrived in the most extraordinary way imaginable. The Swatch x Omega Bioceramic Moonswatch Mission to Earthphase — Moonshine Gold Cold Moon is the most visually pure, most conceptually daring and most seasonally poetic release in the entire Moonswatch Earthphase series — a watch that broke away from the long run of deep navy releases with a clean, crystalline white palette that feels like a genuine reset and a genuine revelation simultaneously.
Released on 4 December 2025 — the night of the Cold Moon, the last full moon of autumn and one of the most evocative names in the entire lunar calendar — this edition introduces a complication, a distribution mechanic and a design story that together make it the most talked-about Moonswatch release since the original eleven models launched in March 2022.
The entire case, crown and pushers are crafted in crisp white Bioceramic — Swatch's patented blend of two thirds ceramic with one third biosourced material derived from castor oil — delivering a matte, immaculate finish that reads as architectural and modern in a way that no previous Moonswatch has quite achieved. The white opaline dial carries a delicate, frosty quality — softly luminous under light, with a fine circular grain texture across its surface that gives it depth and movement. Blue accents on the tachymeter scale and subdial apertures provide just enough contrast to keep the all-white palette from becoming stark, introducing a subtle seasonal coolness that feels precisely right for a winter release. The result is a watch that integrates effortlessly into any wardrobe — understated enough to wear every day, distinctive enough to be immediately recognisable to anyone who knows it.
The Earthphase complication — introduced in 2024 and unique to this sub-series within the Moonswatch lineup — occupies the 10 o'clock subdial. Rather than a conventional moon phase, it shows the Earth as seen from the surface of the Moon itself — a reversal of the standard astronomical perspective that is as conceptually striking as it is visually beautiful. The Earth's oceans are UV-reactive, glowing a luminous blue in darkness, and beneath the Earthphase indicator sits a hidden illustration of Snoopy and Woodstock — both fully suited up in space gear, gazing back at Earth beneath a snowfall — revealed only under UV light as a secret Easter egg for those who seek it out. This playful, deeply considered hidden detail is entirely in keeping with the Moonswatch's spirit of discovery and reward — a watch that gives more the longer and more closely you look at it.
The moon phase indicator is where the Cold Moon makes its most extraordinary statement. Set on a sparkling dark blue moon phase disc, two radiant full moons are both coated in Omega's proprietary Moonshine Gold alloy — the warm, lustrous 18-karat gold formulation developed by Omega to maintain its brilliance longer than standard yellow gold, used across the most prestigious references in the Speedmaster lineup. But here, each Moonshine Gold moon carries something more — a laser-engraved snowflake, etched with extraordinary precision onto the surface of the disc. And crucially, every single snowflake is unique. Just as no two snowflakes in nature are ever identical, no two Cold Moon Moonswatches share the same laser engraving. Every watch is therefore a one-of-one — the same reference, but individually distinguished by its snowflake pattern in a way that no other production watch at any price point can claim.
The distribution mechanic is the final extraordinary detail — and the one that generated more discussion in the watch world than any other aspect of the release. After the initial launch on 4 December 2025, the Cold Moon became available only on days when snow was actually falling somewhere in Switzerland. Swatch monitored live snowfall data and made the watch available globally on those days and those days only — until the last day of winter on 20 March 2026. The result was a release calendar governed entirely by the weather — a concept so genuinely original and so perfectly matched to the watch's theme that it immediately became part of the Cold Moon's legend. Collectors around the world spent the winter monitoring Swiss weather forecasts. It is impossible to imagine a more appropriate or more poetic way to sell a watch called the Cold Moon.
The white rubber VELCRO strap with Bioceramic loop completes the winter palette with a clean, sporty finish that is both functional and entirely consistent with the watch's all-white aesthetic. The asymmetrical case profile is lifted directly from the Omega Speedmaster Moonwatch, with the iconic tachymetric scaled bezel carrying the revered "dot over 90" detail throughout. The hidden "S" is etched into the centre of the domed biosourced glass crystal alongside the dual OMEGA x Swatch and Moonswatch logos and the Speedmaster name. Grade A Super-LumiNova on all hour markers, hands and the chronograph tip provides a crisp green glow in the dark — a brilliant and atmospheric complement to the UV-reactive oceans on the Earthphase display and the hidden Snoopy illustration below it. The caseback features a custom Earth-inspired design exclusive to this Cold Moon model.
The most beautiful Moonswatch of the winter. Unique by snowflake. Available only when it snows. Produced under the Cold Moon. Every single one different.
Key Specifications:
- Case Material: White Bioceramic — case, crown and pushers
- Dial Colour: Opaline white — fine circular grain texture
- Case Diameter: 42mm
- Lug to Lug: 47.30mm
- Case Thickness: ~13.75mm
- Movement: Swatch Quartz Chronograph with Earthphase and Moon Phase complications
- Water Resistance: 3 Bar / 30 metres
- Crystal: Domed biosourced glass with etched "S"
- Bezel: Fixed tachymetric scale — "dot over 90" detail — blue accent markings
- Complications: Earthphase display at 10 o'clock (UV-reactive blue oceans) + Moon Phase display with two Moonshine Gold full moons
- Moonshine Gold: Applied to both full moons on the moon phase disc
- Snowflake Engraving: Unique laser-engraved snowflake on each moon phase disc — no two identical
- Hidden Detail: Snoopy and Woodstock in space gear revealed under UV light beneath Earthphase display
- Strap: White rubber with VELCRO closure and Bioceramic loop
- Luminous Material: Grade A Super-LumiNova (green emission) + UV-reactive blue oceans
- Reference: SO33W701L
