The frog is back, but the Louis Erard x Konstantin Chaykin Unfrogettable returns in two different moods: Turquoise and Brown. The character stays recognizable, while the colors change what you notice first, from violet accents on Turquoise to ochre and warm metal tones on Brown. Both keep the same frog-eye regulator display and mechanical specifications.
The release presents the frog character through Slavic myth, Japanese symbolism and Swiss Jura watchmaking, without explaining those references further. Louis Erard says its collaboration with Konstantin Chaykin has continued since 2023.
Key Takeaways
Each colorway is limited to 178 timepieces and has a recommended retail price of CHF 4,500 before tax.
Rotating eye-shaped discs show the hours at 9 o’clock and seconds at 3, while a central arrow-shaped hand shows minutes.
Both versions use a 40 mm Grade 5 titanium case and the automatic Sellita SW266-1 movement.
Table of Contents
The Louis Erard x Konstantin Chaykin Unfrogettable returns in two colors
These are two color expressions of the same established frog character, not separate mechanical versions. The character is the Frog Princess, and Louis Erard describes the watch as part of an ongoing collaboration with Chaykin, drawing together the release’s references to Slavic myth, Japanese symbolism and watchmaking in the Swiss Jura.
That mix sets the scene for the frog, but the practical differences are easier to pin down: dial colors, crown treatment and strap accents. The shared eyes, crown and expression remain in place. Turquoise leans bright and slightly surreal; Brown takes a warmer, deeper, more nocturnal direction.
The distinction matters if you’re trying to find an Unfrogettable Green or Unfrogettable Purple. The documented editions are Turquoise and Brown. Purple appears as an accent on Turquoise, not as a separate edition.
The collaboration behind the frog character
Louis Erard and Konstantin Chaykin bring different backgrounds to the watch. Louis Erard describes itself as an independent Swiss watchmaker established in 1929, based in the Swiss Jura and associated with Noirmont. It says it focuses on regulator displays, mechanical watches, artistic crafts and making horological craftsmanship accessible. The company says its collaboration with Chaykin has continued since 2023; Alain Silberstein and Vianney Halter are among its other named collaborators.
Louis Erard’s collaborator
Chaykin founded his Manufacture in 2003. His profile credits him with 94 patents and counting, Russia’s first tourbillons, and a clock that calculates Orthodox Easter. It also describes him as the only Russian member of the Académie Horlogère des Créateurs Indépendants (AHCI) and a former president. His character-led watches include Clown, Joker, Minotaur and Harley Quinn.
The profile mentions his association with the Grand Prix d’Horlogerie de Genève, his 2018 Audacity Prize and the Martian Tourbillon’s 2021 record as the most expensive Russian watch ever sold.
How the frog-eye regulator display tells time
The dial separates the three time indications across a horizontal regulator layout. At 9 o’clock, an eye-shaped disc indicates the hours; at 3, a second eye-shaped disc indicates the seconds. Both discs rotate, so the eyes are working parts of the time display as well as features of the frog’s face.
Minutes come from the arrow-shaped hand in the center. The crown sits at 12 o’clock, opposite the collaboration inscription and both makers’ logos at 6. The technical description says the inscription and logos use white transfers.
It’s an unusual arrangement, but the release doesn’t provide evidence that it’s easier or faster to read than a conventional dial. Like the Horological Machine No. 3 Frog, its appeal is more specific: the eyes that give the frog its expression also carry the hours and seconds.
Turquoise and Brown: two palettes, one character
Manuel Emch says the eyes, crown and expression keep the character recognizable, giving color room to shift its mood without changing the frog’s personality.
Unfrogettable Turquoise
Turquoise is the brighter, more electric and slightly surreal option. Its light turquoise lower plate has a grained finish, with dark turquoise and purple on the hour ring. Dark turquoise counters and satin-finished rings carry light turquoise markers; violet appears below on the two-tone minutes ring. The discs and hands are rhodium-treated, the pupils are black-lacquered, and green SLN C5 details provide the stated luminous accents. Violet returns on the strap stitching and lining.
Unfrogettable Brown
Brown is warmer, deeper and more nocturnal. A light brown grained plate sits beneath dark brown counters and brown-and-ochre ring details. The discs and minute hand are 5N-treated, as is the titanium crown treated with warm 5N PVD.Its green SLN C5 details are shared with Turquoise, while the strap stitching and lining stay black.
Grade 5 titanium case and crown
Both editions pair a 40 mm Grade 5 titanium case with an automatic Sellita SW266-1 movement, 31 jewels, an approximately 38-hour power reserve, 5-bar water resistance and dimensions of 46.50 mm lug-to-lug by 12.45 mm thick.
- Diameter: 40 mm
- Lug-to-lug: 46.50 mm
- Thickness: 12.45 mm
The three-piece case mixes satin-finished planes with polished curves.
The crown is at 12 o’clock on both versions. Turquoise gets a polished Grade 5 titanium crown; Brown uses Grade 5 titanium treated with warm 5N PVD.
A sapphire crystal, treated on both sides to reduce reflections, covers the dial. The transparent caseback shows the movement, giving the openworked oscillating weight a visible role from the back as well, a feature also noted in this two-faced Valbray V.01 Chrono.
Himeji Kurozan leather and Urushi finish
The black Himeji Kurozan calf leather is described as naturally tanned, hand-rubbed and finished with Urushi lacquer, but the release gives no care instructions. Get separate guidance from Louis Erard before deciding how to clean it or expose it to moisture.
The leather comes from a historic tannery in Japan and has both matte and glossy surfaces. Turquoise adds violet stitching and lining; Brown keeps both black.
The strap measures 20/18 mm wide and 80/115 mm long. It has quick-release spring bars, a polished Grade 5 titanium pin buckle and a satin-finished plate bearing the Louis Erard (“LE”) logo.
Sellita SW266-1 movement and visible mechanics
Both watches use an élaboré-grade automatic Sellita SW266-1 regulator movement. It measures 11½’’’ in movement size, 25.60 mm across and 5.60 mm thick, with 31 jewels, a frequency of 28,800 vph (4 Hz) and an approximately 38-hour power reserve.
Through the transparent caseback, the openworked oscillating weight shows a black-lacquered Louis Erard symbol.
Water resistance and practical specification limits
The published 5-bar rating won’t meet a requirement above 5 bar.
That distinction matters if water use is part of your buying decision. The release gives a number, not advice about swimming, diving, showering or another specific use. It also doesn’t provide wear testing or explain how the watch should be treated in different conditions. The release doesn’t give enough information to recommend it for any of those uses.
If you need a watch rated above 5 bar, this specification doesn’t meet that stated threshold. If your requirement is at or below 5 bar, the release still doesn’t settle whether the watch suits your intended use. Confirm that directly with Louis Erard before relying on it for a particular activity.
The dimensions and titanium case don’t answer water-use questions, either. Nor do the leather strap and buckle details establish suitability for water; they describe the materials and hardware, not how the watch should be used around moisture. The 50 m and 165 ft figures don’t change that: they’re listed equivalents, not a guarantee of how the watch performs in use.
There’s no wear guidance here to fill in those gaps. For a buyer, the useful line is straightforward: treat 5 bar as the published limit, and ask Louis Erard about your intended use rather than inferring a recommendation from the depth figures.
Price, references, and 178-piece availability
Each colorway is limited to 178 timepieces, with a recommended retail price of CHF 4,500 excluding tax. The Turquoise reference is 85340AA0
- BVA19 2; Brown is 85340AA0
- BVA19 3. The caseback engraving reads “LOUIS ERARD KONSTANTIN CHAYKIN 1 OF 178.”The release doesn’t say when or where the watches will be available; check with Louis Erard or an authorized retailer.
Comparisons the release does not settle
The documented Unfrogettable is a frog-themed horizontal regulator with rotating eye-shaped hour and seconds discs and a central arrow-shaped minute hand. The release supplies no comparable specifications, prices or availability for Konstantin Chaykin’s Time Eater or Joker.
The same limit applies to broad searches for Konstantin Chaykin watch prices: this release gives no general price comparison.
And if you’re comparing the two Unfrogettable versions, the supported difference is color, not fit or performance. Turquoise carries violet through the dial and strap; Brown brings ochre and 5N-treated components against black strap details. The 40 mm case and 5-bar rating don’t establish how either version will fit or whether it suits a particular activity.
Frequently Asked Questions
How does the Unfrogettable frog-eye regulator display tell time?
A rotating eye-shaped disc at 9 o’clock shows the hours, and the other eye-shaped disc at 3 shows the seconds. A central arrow-shaped hand indicates the minutes.
What are the case, movement, dimensions, and water-resistance specifications?
Both editions have a 40 mm Grade 5 titanium case measuring 46.50 mm lug-to-lug and 12.45 mm thick. They use an automatic Sellita SW266-1 movement with 31 jewels and an approximately 38-hour power reserve; water resistance is rated at 5 bar.
What are the tradeoffs of this watch’s unusual regulator display for daily wear?
The display separates hours, minutes and seconds across rotating eye-shaped discs and a central hand, giving the frog’s face a functional role. Its unusual layout is a design distinction, but there’s no evidence that it’s easier or faster to read than a conventional dial.
