Louis Erard x Konstantin Chaykin « Unfrogettable Green »
This Green version is a smile on your wrist—watchmaking that dares to use color, humor, and personality without ever compromising on technique. A fresh, bold, and perfectly confident piece: you notice it, you grow attached to it, and you never forget it.
The bold alliance between the Swiss regulator and wild imagination
Louis Erard x Konstantin Chaykin “Unfrogettable Green” — limited edition regulator watch
Discover the Unfrogettable Green watch, the result of a collaboration between Swiss manufacturer Louis Erard and visionary watchmaker Konstantin Chaykin. Combining Swiss watchmaking heritage with bold graphics, this limited edition (178 pieces) revisits the traditional regulator display in a form full of character.
With its 40 mm Grade 5 titanium case, green dial inspired by the “princess frog,” rotating discs for the hours and seconds, and Sellita SW266-1 automatic caliber, the Unfrogettable Green is designed for enthusiasts of technical, refined watches that are also full of personality.
Whether you are a discerning collector or a lover of original watches, the Unfrogettable Green will appeal to those seeking exclusivity, bold aesthetics, and horological precision.
Movement
•Caliber: Sellita SW266-1, automatic regulator. •Jewels: 31 jewels. konstantinchaykin.com+1
•Frequency: 28,800 vibrations/hour (4 Hz). •Power reserve: Approximately 38 hours.
Material: Grade 5 titanium, satin and polished finishes.
•Diameter: 40 mm. Timekeepers Club+1
•Thickness: 12.45 mm.
•Lug to lug: approximately 46.50 mm. •Glass: Sapphire, anti-reflective on both sides.
•Case back: Transparent (sapphire) — movement visible.
•Crown: Titanium crown, design inspired by a royal crown, positioned at 12 o’clock.
•Water resistance: 5 bar (50 m) / 50 m (splashes / rain — not for diving)
🎨 Dial & Hands
•Dial:
◦Light green base with a grained finish.
◦Dark green hour ring + red accents to highlight the hour markers.
◦Dark green lacquered “nostrils” — an aesthetic detail inspired by frogs. ◦Circular satin-finished hour and second rings in dark green with light green markers.
◦“Louis Erard & Konstantin Chaykin” logos at 6 o’clock — white transfer.
•Hands / Discs:
◦2N-plated hour and second discs, matte & satin finishes, with black lacquered pupils. ◦Green SLN C5 luminescent accents on the markers and minute hand. konstantinchaykin.com+1
◦Central minute hand — “arrow” shape, 2N-plated, with luminescent tip.
Display/Functions: Horizontal regulator—hours on a disc at 9 o’clock, seconds on a disc at 3 o’clock, minutes via a central arrow-shaped hand. • Oscillating weight: Openworked, featuring the black lacquered “Louis Erard” symbol—visible through the transparent case back.
Strap: “Himeji Kurozan” leather (vegetable-tanned calfskin, lacquered with Urushi—a traditional Japanese technique used for samurai armor). •Finishes: Mix of matte and glossy surfaces, green stitching on the lugs, green rabbit leather lining.
• Buckle: Grade 5 titanium pin buckle, satin-finished “LE” plate, quick-release spring segments for easy strap replacement.
• Strap dimensions: width 20/18 mm (lug/buckle), length ~ 80/115 mm.
•The “Green” version takes up the “frog/frog princess” concept: the dial, the rotating discs, the “nostrils,” the pupils—everything contributes to giving the watch an expressive, almost “living” face.
•The horizontal regulator display (hours at 9 o’clock, seconds at 3 o’clock, minutes in the center) reverses traditional readability to create a true “character” — in the spirit of Konstantin Chaykin’s “Wristmons.” •The titanium case, the “royal” crown at 12 o’clock, the Urushi leather strap—all the details aim to combine watchmaking precision, traditional craftsmanship, and bold aesthetics.
