The Titanium Field Guide

Louis Erard x Konstantin Chaykin Unfrogettable (Green, Purple)

85340AA01.BVA191 / 85340AA02.BVA192 Archive · used only

The Louis Erard x Konstantin Chaykin Unfrogettable (Green, Purple) was a 40 mm Grade 5 titanium watch with a Sellita SW266-1 automatic movement. It is no longer made, so this page is a reference for buying one used.

All Louis Erard watchesOther watchesGrade 5 titaniumDisplay back
Price
≈$5,406 (CHF 4,500)
Material
Titanium
Grade / type
Grade 5
Water resistance
50 m
Reference
85340AA01.BVA191 / 85340AA02.BVA192
Type
Other
Case diameter
40.0 mm
Thickness
12.45 mm
Lug-to-lug
46.5 mm
Origin
Switzerland
Movement
Automatic regulator
Caliber
Sellita SW266-1 (Elaboré grade)
Power reserve
38 h
Complications
Time only
Colour
Grey
Surface treatment
Satin-finished and polished Grade 5 titanium; coronet crown at 12
Finish technology
Natural finish
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Black Himeji Kurozan calf leather with Urushi lacquer, Grade 5 titanium pin buckle
Crystal
Sapphire with anti-reflective treatment on both sides
Display back
Yes
Dial
Green edition: light green grained lower plate with a dark green and red hour ring and dark green lacquered nostrils. Purple edition: light purple grained lower plate with a dark purple and red hour ring and dark purple lacquered nostrils. Hours and seconds on the eye discs, central minute hand
Dial colours
Green Purple
Lume
Super-LumiNova C5 on the hour and minute discs and the minute-hand tip
Availability
No longer offered
Status
Archive (limited edition of 178 pieces per colourway, November 2025; both public listings on the maker store read sold out on 2026-09-29)
Not published
Weight, Hardness, Construction, Caseback, Matching bracelet
High confidence Verified Sep 2026 Source: Louis Erard (maker product page, green) / Louis Erard (maker product page, purple) / Konstantin Chaykin (collaboration page) / Monochrome
Facts are free to cite with a link.
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Frequently asked questions

What grade of titanium is the Louis Erard x Konstantin Chaykin Unfrogettable (Green, Purple)?

Grade 5, as stated by the maker.

What size is the Louis Erard x Konstantin Chaykin Unfrogettable (Green, Purple)?

The case is 40 mm across, 12.45 mm thick and 46.5 mm from lug to lug. It is water resistant to 50 m.

How much does the Louis Erard x Konstantin Chaykin Unfrogettable (Green, Purple) cost, and is it available?

It is no longer made, so the only way to buy one is used. Its list price when it was in production was $5,406.

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