Blancpain
Blancpain Villeret Ultraplate Automatique 40 6651-3642-55B
The Blancpain Villeret Ultraplate Automatique 40 (reference 6651-3642-55B) is a 40 mm 18k red gold watch with a opaline dial. It runs on the automatic caliber 1151 with a 100-hour power reserve and is water resistant to 30 m.
Specifications
Case
- Reference
- 6651-3642-55B
- Collection
- Villeret
- Case size
- 40 mm
- Thickness
- 8.7 mm
- Case material
- 18k red gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 30 m
- Bracelet / strap
- Leather strap
Dial and bezel
- Dial
- Opaline
Movement
- Movement
- Automatic
- Caliber
- 1151
- Power reserve
- 100 hours
- Functions
- Date
How it compares within the Villeret family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 6651-3642-55B (This watch) | 40 mm | 18k red gold | Opaline | 1151 | — |
| 6263-1127-55 | 37.6 mm | Stainless steel | White | 6763 | — |
| 6639-3642-55B | 42 mm | 18k red gold | White | 6639 | 2010– |
| 6640-1127-55B | 40.3 mm | Stainless steel | White | 1240H | 2014– |
| 6651-1127-55B | 40 mm | Stainless steel | White | 1151 | — |
| 6654-1127-55B | 40 mm | Stainless steel | White | 6654 | — |
| 6662-1127-55B | 40 mm | Stainless steel | White | — | 2019– |
| 6670-1127-55 | 40 mm | Stainless steel | White | 6054F | 2011– |
| 6685-1127-55B | 40 mm | Stainless steel | White enamel | 66CM8 | 2011– |
About the Villeret family
Named after the village where Blancpain began, Villeret is the brand's classic dress collection. The watches share a slim round case with a stepped profile, enamel or opaline dials, and Roman or Arabic numerals, and they are usually made in steel or red gold.
The line is best known for its complete calendar with moon phase, a long-standing Blancpain speciality, but it also includes simple time-only models, eight-day watches, annual calendars and other complications, many of them on automatic calibers such as the 1150 and 1151 with long power reserves. Because the references differ mostly in function and dial, describe the complications precisely and confirm that every calendar indication works and is set correctly.
Quick answers
- What size is the Blancpain Villeret Ultraplate Automatique 40 6651-3642-55B?
- The Blancpain Villeret Ultraplate Automatique 40 6651-3642-55B has a 40 mm case, 8.7 mm thick.
- What movement does the Blancpain Villeret Ultraplate Automatique 40 6651-3642-55B use?
- It uses the automatic caliber 1151, with a 100-hour power reserve.
- How water resistant is the Blancpain Villeret Ultraplate Automatique 40 6651-3642-55B?
- It is water resistant to 30 metres.
- What is the Blancpain Villeret Ultraplate Automatique 40 6651-3642-55B made of?
- The case is 18k red gold. Bracelet or strap: Leather strap.
Catalog facts checked September 2026.