Blancpain
Blancpain Fifty Fathoms Automatique 5015-12B40-O52A
The Blancpain Fifty Fathoms Automatique (reference 5015-12B40-O52A) is a 45 mm titanium watch with a blue dial. It runs on the automatic caliber 1315 with a 120-hour power reserve and is water resistant to 300 m.
Specifications
Case
- Reference
- 5015-12B40-O52A
- Collection
- Fifty Fathoms
- Case size
- 45 mm
- Thickness
- 15.5 mm
- Case material
- Titanium
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 300 m
- Bracelet / strap
- Sail-canvas strap
Dial and bezel
- Dial
- Blue
- Bezel
- Unidirectional rotating dive bezel
Movement
- Movement
- Automatic
- Caliber
- 1315
- Power reserve
- 120 hours
- Frequency
- 28,800 vph
- Jewels
- 35
- Functions
- Date, Dive bezel
How it compares within the Fifty Fathoms family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 5015-12B40-O52A (This watch) | 45 mm | Titanium | Blue | 1315 | — |
| 50015-12B30-52B | 48 mm | Titanium | Black | 1315 | 2009– |
| 5008-1130-B52A | 40.3 mm | Stainless steel | Black | 1151 | 2017– |
| 5008B-1130-B52A | 40.3 mm | Stainless steel | Black | 1151 | 2019– |
| 5010-12B30-B52A | 42.3 mm | Titanium | Black | 1315 | 2023– |
| 5010-12B30-B52B | 42.3 mm | Titanium | Black | 1315 | 2023– |
| 5015-1130-52A | 45 mm | Stainless steel | Black | 1315 | 2007– |
| 5015C-1130-52B | 45 mm | Stainless steel | Black | 1315 | 2007– |
| 5015E-1130-B52A | 45 mm | Stainless steel | Black | 1315 | 2019– |
About the Fifty Fathoms family
The Fifty Fathoms appeared in 1953 and is one of the first modern dive watches. It was developed with French naval combat divers, who needed a reliable, legible watch with a locking rotating bezel; the name refers to the depth of about 91 metres that was then thought to be the limit for divers.
Modern Fifty Fathoms have a domed sapphire bezel insert, a large luminous dial and a sapphire caseback. The 45 mm reference 5015, introduced in 2007, runs on the caliber 1315 with a five-day power reserve, and in 2023 the brand added the 42 mm reference 5010 for its 70th anniversary. Flyback chronographs use the F185. Buyers check that the case material, dial and bezel match the reference, and the bracelet, if supplied, is worth noting.
Quick answers
- What size is the Blancpain Fifty Fathoms Automatique 5015-12B40-O52A?
- The Blancpain Fifty Fathoms Automatique 5015-12B40-O52A has a 45 mm case, 15.5 mm thick.
- What movement does the Blancpain Fifty Fathoms Automatique 5015-12B40-O52A use?
- It uses the automatic caliber 1315, with a 120-hour power reserve.
- How water resistant is the Blancpain Fifty Fathoms Automatique 5015-12B40-O52A?
- It is water resistant to 300 metres.
- What is the Blancpain Fifty Fathoms Automatique 5015-12B40-O52A made of?
- The case is titanium. Bracelet or strap: Sail-canvas strap.
Catalog facts checked September 2026.