Patek Philippe
Patek Philippe Perpetual Calendar Chronograph 3970EJ
The Patek Philippe Perpetual Calendar Chronograph (reference 3970EJ) is a 36 mm 18k yellow gold watch. It runs on the manual caliber CH 27-70 Q and is water resistant to 25 m. It was made from 1991 to 2004.
Specifications
Case
- Reference
- 3970EJ
- Collection
- Grand Complications
- Case size
- 36 mm
- Case material
- 18k yellow gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 25 m
- Bracelet / strap
- Alligator leather strap
Movement
- Movement
- Manual
- Caliber
- CH 27-70 Q (base CH 27-70)
- Frequency
- 18,000 vph
- Functions
- Chronograph, Perpetual calendar, Moon phase
Production
- Production
- 1991–2004
Dial versions
This reference was made with these dials and finishes.
3970EJ White
3970EJ-001
Stick/dot indexes
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 |
|---|---|---|---|---|---|
| 3970EJ (This watch) | 36 mm | 18k yellow gold | — | CH 27-70 Q | 1991–2004 |
| 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 3970EJ?
- The Patek Philippe Perpetual Calendar Chronograph 3970EJ has a 36 mm case.
- What movement does the Patek Philippe Perpetual Calendar Chronograph 3970EJ use?
- It uses the manual caliber CH 27-70 Q.
- How water resistant is the Patek Philippe Perpetual Calendar Chronograph 3970EJ?
- It is water resistant to 25 metres.
- Is the Patek Philippe Perpetual Calendar Chronograph 3970EJ still in production?
- No. It was made until 2004.
- When did the Patek Philippe Perpetual Calendar Chronograph 3970EJ come out?
- It was introduced in 1991 and made until 2004.
- What is the Patek Philippe Perpetual Calendar Chronograph 3970EJ made of?
- The case is 18k yellow gold. Bracelet or strap: Alligator leather strap.
Catalog facts checked September 2026.