Louis Erard and Konstantin Chaykin return with a collaboration that once again proves neither brand has any interest in following convention. Their latest creation, the Unfrogettable, is a fusion of Slavic folklore, Japanese symbolism, Swiss horology, and Chaykin’s unmistakable Wristmon eccentricity.
The result of this partnership is an entirely reworked 40 mm case and reshaped surfaces in Grade 5 titanium, paired with a strap crafted from Himeji Kurozan leather—the same lacquered and hand-rubbed material once used in samurai armor. Every detail carries meaning. In Slavic tales, the frog is a spellbound princess; in Japanese culture, the amphibian symbolises fortune and resilience. Combined, these elements produce a hybrid with both whimsy and warrior spirit.
On the dial, the wandering black- lacquered ‘eyes’, doubles as the hours (at 9 o’clock) and seconds (at 3 o’clock) indicators. As the time passes, the pupils rotate and the dial appears to animate echoing Chaykin’s famous Joker and Clown Wristmons.

At the centre is an arrow-shaped minute hand—a subtle reference to the Frog Princess tale—while the dial itself is built on textured layers, available in either a deep forest green or a rich violet. Lacquered nostrils, just below the pupils, add another playful touch. It is complemented by a two-tone minute track featuring a red segment marked with the Louis Erard and Konstantin Chaykin logos in white transfers at 6 o’clock. In a final twist of humour, the crown (crafted in Grade 5 titanium in both models, but comes with a 2N gold PVD treatment for the green model) sits at 12 o’clock—a nod, as the brand puts it, to the fact that this frog is a princess. The movement, a Sellita SW266-1 modified for the regulator layout, beats at 4 Hz and offers a 38-hour power reserve. It is elaboré grade, equipped with a custom openworked rotor lacquered in black, and visible through the sapphire caseback engraved with the limited edition number, ‘1 of 178.’
The strap may be one of the most fascinating details of the watch. Crafted from black Kurozan leather—often called ‘black diamond leather’—it is made using traditional Japanese techniques involving natural tanning and multiple layers of urushi lacquer. The leather is lined with coloured rabbit leather, stitched in either green or purple depending on the edition, and fastened with a Grade 5 titanium buckle. Both versions are limited to 178 pieces each.
It may be a little mad, but it is also memorable—truly, and fittingly, Unfrogettable.