Louis Erard and watchmaker Konstantin Chaykin turn a regulator into the Frog Princess of Slavic myth, suited in samurai armour.
Louis Erard today introduces the Unfrogettable in Green and Purple. This time the partners went beyond the dial and reworked the case itself.

The regulator display turns on its side: hours sit at 9 o’clock and seconds at 3 o’clock, on rotating discs that form the frog’s eyes. An arrow-shaped minute hand crosses the centre, and the crown at 12 o’clock is shaped like a royal crown. The Grade 5 titanium case is slimmer and smaller than earlier Chaykin collaborations, and the strap is black Himeji Kurozan leather, once used for samurai armour.
“The frog, in Russian tales, is a spell in disguise. In Japan, it symbolizes luck and resilience,” says Manuel Emch, who leads Louis Erard.
A hidden love note, the two names joined by a heart, runs along the minutes ring — a quiet signature on a dial built to look back at you.

The Basics
- Brand Louis Erard x Konstantin Chaykin
- Model Unfrogettable, Green and Purple
- Reference 85340AA01.BVA191 (Green); 85340AA02.BVA192 (Purple)
- Diameter 40mm
- Thickness 12.45mm
- Case material Grade 5 titanium, satin-finished and polished; crown at 12 o’clock shaped like a royal crown (2N PVD on Green); transparent case back
- Dial Green: light green grained base, dark green and red hour ring, 2N-plated discs, SLN C5 green lume. Purple: light purple grained base, dark purple and red hour ring, rhodium-treated discs, SLN C1 green lume
- Water resistance 5 bar (50m)
- Strap Black Himeji Kurozan leather, hand-rubbed, Urushi lacquer; green (Green) or purple (Purple) stitching and rabbit leather lining; Grade 5 titanium pin buckle
- Limited edition 178 pieces per colourway

The Movement
- Calibre Sellita SW266-1, automatic regulator, élaboré grade
- Functions Hours, minutes, seconds; horizontal regulator (hours at 9 o’clock, seconds at 3 o’clock, central minute hand)
- Winding Automatic
- Power reserve Approx. 38 hours
- Frequency 28,800 vph (4Hz)
- Jewels 31
Images courtesy of Louis Erard.










