Louis Erard
Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088
The Louis Erard Time Eater Tourbillon x Konstantin Chaykin (reference 89241AA90.BGA088) is a 42 mm stainless steel watch with a green dial. It runs on the manual caliber BCP T02 with a 100-hour power reserve and is water resistant to 50 m.
Specifications
Case
- Reference
- 89241AA90.BGA088
- Collection
- Excellence
- Case size
- 42 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 50 m
- Bracelet / strap
- Black toad leather
Dial and bezel
- Dial
- Green
Movement
- Movement
- Manual
- Caliber
- BCP T02
- Power reserve
- 100 hours
- Functions
- Tourbillon, Regulator
Production
- Production
- Limited
Dial versions
This reference was made with these dials and finishes.
89241AA90.BGA088 Green
Green minutes track; red tourbillon flange
How it compares within the Excellence family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 89241AA90.BGA088 (This watch) | 42 mm | Stainless steel | Green | BCP T02 | — |
| 22243AA01.BOA02 | 38 mm | Stainless steel | Silver | 2 x Sellita SW100 | — |
| 34237AA54.BVA38 | 42 mm | Stainless steel | Cream | Sellita SW261-1 | — |
| 54230AS61.BVA08 | 40 mm | Stainless steel | Silver | ETA 7001 with RE9 regulator module | — |
| 54230NS62.BVA09 | 40 mm | Stainless steel with black PVD | Black | ETA 7001 with RE9 regulator module | — |
| 66237AA52.BVA34 | 42 mm | Stainless steel | Black | Sellita SW261-1 | — |
| 74359TT02.BTT88 | 40 mm | Microblasted grade 2 titanium and polished grade 5 titanium; red ABS pusher | Black | Sellita SW500 MPCa | — |
| 75357TT02.BTT88 | 40 mm | Microblasted grade 2 titanium and polished grade 5 titanium | Black | ETA 2836-2 | — |
| 85237AA56.BVA175 | 42 mm | Stainless steel | Grey | Sellita SW266-1 | — |
About the Excellence family
The Excellence is Louis Erard's upper line, used for its enamel and guilloché dials and its collaborations with designers and independent watchmakers.
The catalog lists the Excellence Émail Grand Feu and Guilloché Main, the Regulator and La Semaine made with Alain Silberstein, Le Chronographe and other editions, in steel and titanium. Most are limited, so dealers check the number and papers.
Quick answers
- What size is the Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088?
- The Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088 has a 42 mm case.
- What movement does the Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088 use?
- It uses the manual caliber BCP T02, with a 100-hour power reserve.
- How water resistant is the Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088?
- It is water resistant to 50 metres.
- Is the Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088 still in production?
- Limited.
- What is the Louis Erard Time Eater Tourbillon x Konstantin Chaykin 89241AA90.BGA088 made of?
- The case is stainless steel. Bracelet or strap: Black toad leather.
Catalog facts checked November 2026.