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Louis Erard X Konstantin Chaykin Unfrogettable Purple 40mm Limited Edition Mens Watch
Ref. 85340AA02.BVA192
Sits in Louis Erard’s upper tier here — more premium than three quarters of the Louis Erard watches we list, which start at £1,975.
Price range £1,975 to £17,500 across 31 Louis Erard watches in stock.The dial is the centrepiece: a vivid purple base plate arranged as an anthropomorphic frog face, with the hour indicated by a rotating disc in the left eye, small seconds by a rotating disc in the right, and the minutes by a central hand shaped like a frog's tongue. Super-LumiNova accents keep the display legible in low light. The 40mm Grade 5 titanium case combines satin and polished finishing, measuring 12.45mm thick with a 46.50mm lug-to-lug span. The crown is shaped like a royal crown; the caseback is transparent sapphire. A black Himeji Kurozan leather strap, Urushi-lacquered and lined with rabbit leather, fastens via a titanium pin buckle. Limited to 178 pieces.
- Reference
- 85340AA02.BVA192
- Brand
- Louis Erard
- Case size
- 40mm
- Case thickness
- 12.45mm
- Case material
- Titanium
- Case shape
- Round
- Dial
- Purple
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- SW266-1
- Functions
- Small seconds, Skeleton dial
- Water resistance
- 50m
- Bracelet / strap
- Leather strap
- Strap colour
- Black
- Clasp
- Buckle
- Lume
- Super-LumiNova
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 46.50mm
- Power reserve
- 38 hours
- Strap
- Interchangeable
Learn more about Louis Erard
Louis Erard was born in La Chaux-de-Fonds in 1893, into a town then producing a large share of the world's watches. He worked in its workshops, founded a watchmaking school in 1929, and set up a casing and assembly business with André Perret the same year. The first watches under his own name followed in 1931.
Assembly was the trade at the time: components came from independent artisans and the assembler built, adjusted and finished the watch. By 1937 Erard employed more than sixty people and was selling internationally.
The quartz crisis did its usual damage. The company was sold in 1991 and production moved to Le Noirmont in the Jura, then sold again in 2003 to a group led by Alain Spinedi, who refocused it on mechanical watches at prices that undercut everyone doing similar work.
The regulator became the signature — the dial layout that separates hours, minutes and seconds onto their own axes, borrowed from precision reference clocks, and rarely seen at this price.
What has made the brand's recent reputation is collaboration: limited editions with independent watchmakers whose own work is unobtainable, among them Vianney Halter, Konstantin Chaykin and Alain Silberstein, on Sellita and Valjoux movements.
- 1929
- Founds a watchmaking school and a casing business with André Perret.
- 1931
- The first watches carry the Louis Erard name.
- 1991
- Sold, with production moving to Le Noirmont.
- 2003
- Relaunched under Alain Spinedi around mechanical watches.
- 2020
- Collaborations with independent watchmakers define the brand.
Also in 6 collections
This watch appears in Automatic Watches (1,753), Leather Strap Watches (1,052), Dress Watches (555), Skeleton Watches (323), Limited Edition Watches (206) and Titanium Watches (180).
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 40mm suits most wrists
- 46.5mm lug-to-lug keeps the 40mm case wearable
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- One of Louis Erard's more premium watches
Worth knowing
- 50m suits rain and handwashing, not swimming
- 38-hour reserve means winding it after a day off
Louis Erard X Konstantin Chaykin Unfrogettable alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 85340AA02.BVA192 | 805 | 2020.128G |
|---|---|---|---|
| Price | £4,950 | £4,900 | £4,990 |
| Case size | 40mm | 39.9mm | 41mm |
| Water resistance | 50m | 30m | 50m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Leather strap | Leather strap | Fabric strap |
| Power reserve | 38 hours | 42 hours | 38 hours |
| This watch |
| Closely matched |
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Showering yes, swimming no. 50m covers splashes and brief immersion, but a swimming stroke generates well above the pressure that figure describes.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedHow long does it run for when it's not worn?
About 38 hours fully wound — so it will usually stop if you leave it off overnight.
Will it fit my wrist?
Lug-to-lug is 46.50mm, which suits wrists from roughly 16cm (6¼ inches) upward.
Lug-to-lug decides fit more than case diameter does.
How to size a watch to your wristIs it a men's or women's watch?
Listed as men's, though at 40mm it sits in the range that suits anyone.
Cheapest place to buy
Mappin & Webb is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
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