The BEHRENS Perigee BHR027 is a limited-edition mechanical watch whose defining feature is an Earth-Moon display and a digital hour scroll, rather than a conventional dial of hands and indexes. BEHRENS introduced it in August 2022 with its BM01 movement. The brand lists a 43 mm titanium case and a $13,500 price; the unusual mechanism and published specifications are manufacturer descriptions, not independent hands-on test findings.
What is the BEHRENS Perigee?
The Perigee is reference BHR027 in BEHRENS’s 2022 Inventor Series. The company’s history page dates its launch to August 2022 and describes it as the first watch equipped with the brand’s BM01 in-house movement. BEHRENS lists the edition at 200 pieces. BEHRENS Perigee product page · BEHRENS history
How does the Earth-Moon display work?
BEHRENS calls the mechanism Earth-Moon 2.0. In the brand’s explanation, a micro-chain with ruby bearings, driven by two skeletonized gears, powers a 12-hour digital scroll to show the hour. That arrangement gives the watch its distinctive mechanical display instead of relying on a standard central hour hand and dial markings. These are the manufacturer’s descriptions; the available specifications do not independently verify the mechanism’s performance.
The BEHRENS Official Store states that the Earth-Moon display completes a 27.3-day rotation and compares it with a 27.32166-day celestial cycle. Those are brand-published figures, not independently measured cycle-accuracy results. BEHRENS Perigee product page · BEHRENS Official Store Perigee page
#1 Best Overall
- This is a panoramic large aperture moon phase automatic mechanical watch designed by Swiss chief designer Etienne Ruffieux, inspired by the sun, moon, and stars. Precision‑engraved moon disc with daily lunar cycle display, fully presenting the entire cycle of nature's waxing and waning phases. The watch was honored with the Italian A' Design Award for its outstanding original design. It is an automatic large moon phase mechanical watch brimming with the romantic charm of celestial bodies.
- In-house CAL.A4610 fully automatic mechanical movement, bidirectional automatic winding system, 28,880 vibrations per hour, 27 ruby bearings. Exquisite perlage and geneva stripes finishing, edge chamfering process, white gold plating, and engraved gold-plated brand logo highlight exceptional high-end craftsmanship.
- In-house CAL.A4610 fully automatic mechanical movement. Enhanced power reserve technology delivers an extended 80-hour power reserve (twice that of standard mechanical movements). This technology enables a more even and gradual release of the mainspring, resulting in more precise and stable timekeeping.
- Before AGELOCER introduced its panoramic moon phase watch with a large aperture, traditional moon phases were displayed through small windows. This groundbreaking 28.5mm large aperture moon phase design pioneered the industry's first panoramic moon phase watch. To power the large moon phase disc and prevent the dial from shifting due to wrist movement inertia during wear, the design team spent hundreds of hours on repeated testing.
- They completely re-engineered the watch's reversing and drive mechanisms, thickened the toggle spring, and boosted the power output of the rotating disc—using sophisticated R&D to counteract inertia. This technology is now protected by a Chinese utility model patent.
BEHRENS Perigee BHR027 specifications
| Specification | Published detail |
|---|---|
| Reference | BHR027 |
| Movement | BM01, described by BEHRENS as its first in-house-developed movement |
| Case diameter | 43 mm |
| Case material | Titanium |
| Water resistance | 3 BAR |
| Crystal | Sapphire |
| Strap | Crocodile-skin |
| Clasp | Titanium |
| Edition size | 200 pieces |
| Listed price | $13,500 |
These details come from BEHRENS’s product listing, which does not state a publication date. The dimensions and materials are useful for narrowing a comparison, but they do not establish how the watch wears, how readily its displays can be read, or how it performs in use. BEHRENS Perigee product page
What does 3 BAR water resistance mean for a buyer?
BEHRENS lists the case at 3 BAR. That is a modest water-resistance rating, so treat the Perigee as a watch for keeping dry rather than choosing for swimming or water sports. The listing supplies the rating but does not provide an independent water-resistance test or additional activity guidance.
Rank #2
- Set Includes: Watch, box, and warranty card included RPA2023 Drive System: Mechanical (hand winding and self-winding)
- Accuracy: Daily difference + 25 seconds to -15 seconds
- operating time: 40 hours RPA2023 Country of Origin: Japan (Made in Japan)
Price and availability
BEHRENS’s model page, homepage and official store display a price of $13,500. The official store page was marked “Sold out” when accessed on October 8, 2026; that status applies to that page at that time, not necessarily to other dealers or later inventory. Check with BEHRENS or an authorized seller for current stock, seller provenance, taxes, shipping and the final price. BEHRENS Perigee product page · BEHRENS Official Store Perigee page · BEHRENS homepage
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to verify before considering one
For a high-priced watch with an unconventional display, the listed specifications answer only part of the ownership question. Ask the seller about the points the product pages do not establish:
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Rank #3
- SMALL BUDY, BUT VERSATILE:Quality brand original automatic tourbillon style relojes de hombre(watch); without a battery; calendar,waterproof, moon phase function
- LUMINOUS WATCH,EASY TO READ TIME,EVEN IN THE DARK:Fashion design men's mechanical watch, black case with clear golden lines and golden hands, let you read the time easy; The hands will be grow when in the dark, which let you can read the time even in dark
- WATER RESISTANT TO 30M:Waterproof:In general, withstands splashes or brief immersion in water ,but not suitable for hot water bathing or diving. Please do not press any buttons in the water
- NO BATTERY NEEDED:Automatic mechanical movement, Powers with the mechanical movement, without a battery. Operate the watch, to wind-up please whirl the button on the clockwise (Don't need to pull out, just in normal condition.) for 15 to 20 complete revolutions
- NICE PRESENTS:Stylish mechanical germen watch, it fits good and looks fantastic, elegant holiday present sure to be given some compliments by business colleagues and clients, friend. Also, it is nice present for your friends and family as a Father's Day present
- Whether the 43 mm case suits your wrist, ideally by trying one on.
- How quickly you can read both the hour scroll and the other time indications in ordinary lighting.
- What movement servicing requires, where it can be done, and whether parts support is available.
- Whether the strap can be replaced with a compatible option and what its attachment dimensions are.
- Whether the seller has the watch in stock and can document its provenance.
- Whether the final transaction price differs from BEHRENS’s displayed $13,500 price.
The cited BEHRENS pages describe the watch and its mechanism but do not provide independent assessments of accuracy, comfort, legibility, serviceability or durability. Those points require confirmation from a seller or independent evaluation rather than inference from the specifications.
Quick Recap
Best Value
- This is a precision panoramic large aperture moon phase automatic mechanical watch crafted from blue aventurine, the material that most closely resembles the starry night sky, designed by Swiss chief designer Etienne Ruffieux, inspired by the sun, moon, and stars. The intricately carved luminous moon changes once daily, fully showcasing the entire cycle of nature's waxing and waning phases. This watch has been awarded the European Design Award for its outstanding original design.
- In-house CAL.A4610 fully automatic mechanical movement, bidirectional automatic winding system, 28,880 vibrations per hour, 27 ruby bearings. Exquisite perlage and geneva stripes finishing, edge chamfering process, white gold plating, and engraved gold-plated brand logo. Delivers an extended 80-hour power reserve (twice that of standard mechanical movements). This technology enables a more even and gradual release of the mainspring, resulting in more precise and stable timekeeping.
- The moon phase disc in Agelocer's in-house CAL.A4610 automatic mechanical movement features a precision 31-tooth structure. It advances one segment every 22.846 hours, completing a full cycle every 29.51 days to achieve a 708.23-hour lunar cycle. (Conventional moon phase discs use a 59-tooth gear, advancing one notch every 24 hours to complete a full cycle in 29.5 days, resulting in a 708-hour lunar cycle.)
- The astronomical lunar cycle is 29.53 days (708.72 hours), meaning conventional moon phases accumulate a one-day error every 2.7 years. The Agelocer moon phase watch accumulates one day of error every 4.1 years, offering greater precision than traditional 59-tooth moon phase mechanisms.
- The dial is made of natural blue aventurine from Brazil. Its deep blue or violet-blue color from scaly vivianite contained within quartz crystals during geological formation. It shimmers with a beautiful, soft glow, like sky full of stars, make it most star-like natural dial material available today. In this panoramic large moon phase watch, as the dynamic moon perfectly glides across the starry surface of the blue aventurine dial, it feels as if the cosmic starry sky is right before your eyes.
Rank #4
- Tribute to Innovation: The Men’s Copernicus Watch honors the legacy of Nicolaus Copernicus with a vintage watch design that captures the spirit of celestial exploration and the heliocentric model.
- 22-Jewel Automatic Movement: Precision-engineered with a 22-jewel automatic movement, and beautiful open case back, this watch ensures accurate timekeeping powered by the natural movement of your wrist—no batteries required
- Striking Sun-Moon Dial: The distinctive sun-moon dial at the 12 o'clock position elegantly showcases the day and night cycles, adding a touch of astronomical intrigue to your wrist.
- Refined Design Elements: Featuring a 42mm alloy case, this watch displays a brass guilloché face, complemented by blue hands and Roman numerals. The open-heart design reveals the skeleton balance wheel, highlighting the watch's intricate mechanics.
- Comfort and Style: The brown leather strap fits wrists up to 8 inches, offering a classic and comfortable fit. The 19mm width and 3mm thickness ensure the watch is suitable for both formal and casual wear.
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