How a moonphase actually works
A standard moonphase uses a 59-tooth disc that advances one position per day, completing the lunar synodic month (29.53 days) in approximately 59/2 = 29.5 days. This drifts ~1 day every 2.5 years. "Astronomical" or 122-year moonphases use a more accurate gear ratio that drifts only 1 day per ~122 years; some manufacture moonphases (Lange Saxonia Moonphase, Patek 5396) use this design.
Under €10,000 the moonphase market is unusually well-served: Frederique Constant builds in-house at €2,500-3,000, Longines Master moonphase chrono sits at €3,500, and Grand Seiko Spring Drive moonphase tops the bracket at ~€8,500.
Frederique Constant
FC-705 · 38.8mm
Editor's Pick ~€2,900
In-house manufacture moonphase at €3k.
Frederique Constant's Cal. FC-705 is built at the brand's Plan-les-Ouates Geneva facility: automatic moonphase + date, 38-hour reserve. The price/spec ratio is unmatched among Swiss-made manufacture moonphases.
Old-school moonphase chrono with column wheel.
Longines's Master Moonphase Chronograph uses the L687 (an evolved column-wheel chronograph with calendar and moonphase). Triple-calendar layout: day, date, month, plus moonphase. Heritage-leaning aesthetics.
Grand Seiko
40mm · Spring Drive Moonphase
Movement ~€8,500
Spring Drive moonphase with photographic moon.
Grand Seiko's SBGY-series Spring Drive moonphase uses a photographic image of the moon (not a stylised face) on a striated dial. ±1 sec/day, 72-hour reserve.
Junghans
027/4501 · 40.4mm
Heritage ~€2,400
Triple-calendar moonphase with German Bauhaus design.
Junghans's Meister Kalender combines triple-calendar (day, date, month) with moonphase, J800.3 ETA-derived movement. The clean Bauhaus-inflected dial separates it from standard Swiss moon-and-date complications.
€900 mechanical moonphase. Yes.
Tissot's Le Locle Moonphase is the under-€1k mechanical moonphase entry. Powermatic 80 base movement, 80-hour reserve. The cheapest legitimate Swiss moonphase.
Hamilton
H32675160 · 42mm
~€1,400
Open-heart moonphase under €1,500.
Hamilton's Jazzmaster line gets a moonphase + open-heart configuration showing the regulator below 6 o'clock. ETA-based H-37 movement.
Christopher Ward
C9 · 40.5mm
~€2,000
Microbrand 122-year astronomical moonphase.
Christopher Ward's C9 Moonphase uses a 122-year astronomical gear ratio (drift 1 day per 122 years vs the standard 2.5 years). The CW JJ04 module adds the moonphase to a Sellita SW200 base.
Blancpain
6654 · 40mm (over budget)
~€11,500 (luxury reference)
Just over budget but the Villeret moonphase reference.
Blancpain's Villeret moonphase has been the brand's signature reference since the 1980s. Cal. 6654, 100-hour reserve, full triple-calendar with phase.
Listed for context; the modern moonphase landmark.
H. Moser's Endeavour Perpetual Moon uses a fumé dial and a moonphase accurate to ~1,027 years. Over budget but the modern moonphase visual reference.
Mido's quiet moonphase pick.
Mido's Multifort Patrimony Moonphase uses the brand's Cal. 80 base with moonphase module. Sunray dial, applied indices, 80-hour reserve.
Honourable mentions
Frederique Constant Classic Moonphase · FC-330Sub-€2k Frederique Constant moonphase entry.
Seiko Presage Moonphase · SARWJapanese moonphase under €1,500.
Oris Artelier Calibre 113 · Cal. 113In-house Oris with moonphase + calendar, ~€5,500.
How to choose
Best price/manufacture combo: Frederique Constant Slimline Manufacture Moonphase. Best heritage chrono-moonphase: Longines Master. Best dial: Grand Seiko SBGY. The moonphase style hub tracks news.
Frequently asked questions
Is a moonphase actually useful?
No, it's the least practical of the common complications. A standard moonphase drifts one day off actual lunar phase every 32 months (astronomical moonphases hold accurate for 122 years). But it's the most decorative traditional complication, which is why the Frederique Constant Slimline Manufacture Moonphase and Longines Master Moonphase Chronograph exist at all.
Which moonphase under 10,000 is the best value?
The Frederique Constant Slimline Manufacture Moonphase at around 3,500 euro is the honest value pick: in-house FC-712 movement, proper moonphase disc, 40mm dress case. The Grand Seiko SBGY007 at 7,500 euro is the finishing-first alternative on Spring Drive. Both are proper mid-tier moonphase watches without homage compromises. The Junghans Meister Kalender at 2,000 euro is the Bauhaus-adjacent budget answer.
Is the Junghans Meister Kalender a real moonphase?
Yes. The Junghans Meister Kalender at around 2,000 euro includes a moonphase, day and date on the ETA-based 2836 with Junghans decoration. It's the Bauhaus-adjacent budget moonphase. Not haute horology but a proper mechanical moonphase at an accessible price. Junghans is a proper mid-tier German brand with genuine watchmaking history back to 1861. This is a serious moonphase at accessible pricing.
Does the Grand Seiko SBGY007 justify 7,500 euro?
For Spring Drive fans, yes. The Grand Seiko SBGY007 combines Spring Drive smooth-sweep seconds with a proper moonphase in a dress case with Zaratsu-polished finishing. It's the finishing-first answer at this price. If you want the moonphase specifically, the Frederique Constant delivers at 3,500.
Comments 1