Patek Philippe
Patek Philippe Perpetual Calendar Chronograph 3970 3970EP
The Patek Philippe Perpetual Calendar Chronograph 3970 (reference 3970EP) is a 36 mm platinum watch. It runs on the manual caliber CH 27-70 Q. It was made from 1987 to 2004.
Specifications
Case
- Reference
- 3970EP
- Collection
- Grand Complications
- Case size
- 36 mm
- Case material
- Platinum
- Case shape
- Round
- Crystal
- Sapphire
Movement
- Movement
- Manual
- Caliber
- CH 27-70 Q
- Functions
- Perpetual calendar, Chronograph, Moon phase, Day/night indicator, Leap year indicator, Small seconds
Production
- Production
- 1987–2004
Dial versions
This reference was made with these dials and finishes.
3970EP Black
3970EP-019
Diamond-set markers · Diamond; dial markers
3970EP Silver
3970EP-021
Opaline silver; stick markers
How it compares within the Grand Complications family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 3970EP (This watch) | 36 mm | Platinum | — | CH 27-70 Q | 1987–2004 |
| 5204G | 40.2 mm | — | — | CHR 29-535 PS Q | 2021– |
| 5208R | 42 mm | 18k rose gold | Black | R CH 27 PS QI | 2018–2025 |
| 5236P | 41.3 mm | Platinum | — | 31-260 PS QL | 2021– |
| 5270P-001 | 41 mm | Platinum | Salmon | CH 29-535 PS Q | 2018–2021 |
| 5320G-001 | 40 mm | 18k white gold | Cream | 324 S Q | 2017– |
| 5327G | 39 mm | 18k white gold | Blue | 240 Q | 2016– |
| 5327R | 39 mm | 18k rose gold | Ivory | 240 Q | 2016– |
| 5470P-001 | 41 mm | Platinum | Blue | CH 29-535 PS 1/10 | 2022– |
About the Grand Complications family
Grand Complications is Patek Philippe's heading for its most complex watches: perpetual calendars, split-seconds chronographs, minute repeaters, tourbillons and astronomical displays such as the sidereal time and sky charts of the Celestial models. It continues a tradition that goes back to the brand's complicated pocket watches.
References in the catalog include perpetual calendars such as the 5160/500R with an engraved case, the minute repeater perpetual calendar 5374, the Celestial 6104 and the Grandmaster Chime 6300, a reversible watch with grande and petite sonnerie. Production of many of these is very small. For dealers, provenance, the Certificate of Origin, an Extract from the Archives and service by the brand matter more here than anywhere else in the range.
Quick answers
- What size is the Patek Philippe Perpetual Calendar Chronograph 3970 3970EP?
- The Patek Philippe Perpetual Calendar Chronograph 3970 3970EP has a 36 mm case.
- What movement does the Patek Philippe Perpetual Calendar Chronograph 3970 3970EP use?
- It uses the manual caliber CH 27-70 Q.
- Is the Patek Philippe Perpetual Calendar Chronograph 3970 3970EP still in production?
- No. It was made until 2004.
- When did the Patek Philippe Perpetual Calendar Chronograph 3970 3970EP come out?
- It was introduced in 1987 and made until 2004.
- What is the Patek Philippe Perpetual Calendar Chronograph 3970 3970EP made of?
- The case is platinum.
- Which dials was the Patek Philippe Perpetual Calendar Chronograph 3970 3970EP made with?
- The catalog lists 2 dials: Black, Silver.
Catalog facts checked October 2026.