Louis Erard x Konstantin Chaykin Unfrogettable Purple | LE178 | Pre-Order
Limited Edition 178 Pieces
The Unfrogettable brings a bold new chapter to luxury independent watchmaking, blending Slavic folklore, Japanese symbolism, and cutting-edge horology into a single unforgettable creation. Crafted from Grade 5 titanium, the fully redesigned 40 mm case introduces sculpted surfaces, alternating polished and satin finishes, and a whimsical crown that hints at the watch’s fairytale inspiration.
Inside, the signature Louis Erard regulator display has been reimagined with a horizontal layout: hours at 9, seconds at 3, and a striking arrow-shaped minutes hand that ties back to the legendary Frog Princess. As the movement advances, the pupils rotate, giving the dial a vivid sense of animation. Dark purple (or green) grained bases, lacquered accents, and a dual-tone minute ring stamped with Louis Erard ❤ Konstantin Chaykin bring a playful yet collectible charm that appeals to enthusiasts of avant-garde independent watches, limited editions, and artistic mechanical timepieces.
Available in Green here.
A limited edition of 178 pieces worldwide.
Click the "Request More Info" button for Pre-Order information.
Ref. 85340AA02.BVA192
Balancing humor with high craftsmanship, this collaboration between Louis Erard and Konstantin Chaykin showcases precision movement architecture and imaginative design in equal measure. The lacquered Himeji Kurozan leather bracelet (made using the same traditional techniques once used for samurai armor) adds both heritage and durability, pairing a deep black finish with purple stitching and vibrant rabbit-leather lining.
With its 12.45 mm profile, lightweight titanium construction, and expressive mechanical personality, the Unfrogettable stands out as a collector-focused luxury watch that merges cultural storytelling, modern materials, and inventive independent watch design. It’s a heroic blend of myth and mastery that's crafted to surprise, delight, and maybe even rewrite the ending of your own horological fairytale.
TECHNICAL SPECIFICATIONS
Calibre
- Automatic régulateur
- Sellita SW266-1 calibre
Functions
- Hours, minutes, and seconds
- Hours hand in a counter at 9 o'clock
- Central minutes hand
- Seconds hand in a counter at 3 o'clock
Power Reserve
~ 38 hours
Case
- Satin-finished and polished Grade 5 titanium
- 3 pieces
Measurements
- 40 mm
- 46.50 mm lug to lug
Glass
- Sapphire crystal with anti-reflective treatment on both sides
- Movement visible through the transparent case back
Crown
Polished grade 5 titanium crown inspired by a royal crown and finished with 2N PVD coating
Caseback
Engraved "LOUIS ERARD KONSTANTIN CHAYKIN 1 of 178"
Water Resistance
5 bars (50 m/165 ft)
Dial
- Dark purple and red hour ring with light green and light pink transfers
- Lower plate in light purple with grained finish
- Dark purple lacquered nostrils
- Dark purple circular satin-finished hour and seconds rings with light purple transfer markers
- Louis Erard and Konstantin Chaykin logos in white transfers at 6 o'clock
Hands
- 2N-plated hour and minute discs with matte and satin finishes
- Black-lacquered pupils
- SLN C5 green-luminescent accents
- 2N-plated arrow-shaped minute hand with SLN C5 green luminescent tip
Strap
- Black Himeji Kurozan leather (black diamond leather)
- Hand-rubbed black calf leather, naturally tanned and finished with Urushi lacquer
_ Matte and glossy finishes
- Purple stitching on the lugs
- Purple rabbit leather lining
- Polished Grade 5 titanium pin buckle with satin-finished "LE" logo plate
- Quick-release spring bars for easy strap change
Strap Dimensions
- 20/18 mm width
- 80/115 mm length
Oster Jewelers is a Louis Erard Authorized Retailer Partner.