Patek Philippe
Patek Philippe Nautilus 3700/1A
“Jumbo”
The Patek Philippe Nautilus (reference 3700/1A) is a 40 mm stainless steel watch with a blue dial. It runs on the automatic caliber 28-255 C and is water resistant to 120 m. It was introduced in 1976.
Specifications
Case
- Reference
- 3700/1A
- Nickname
- Jumbo
- Collection
- Nautilus
- Case size
- 40 mm
- Thickness
- 7.6 mm
- Case material
- Stainless steel
- Case shape
- Other
- Crystal
- Sapphire
- Water resistance
- 120 m
- Bracelet / strap
- Nautilus bracelet, Stainless steel
Dial and bezel
- Dial
- Blue
Movement
- Movement
- Automatic
- Caliber
- 28-255 C
- Functions
- Date
Production
- Production
- 1976 – today (discontinued)
How it compares within the Nautilus family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 3700/1A (This watch) | 40 mm | Stainless steel | Blue | 28-255 C | 1976– |
| 5726/1A-014 | 40.5 mm | Stainless steel | Blue | 324 S QA LU 24H/303 | 2019– |
| 5740/1G-001 | 40 mm | 18k white gold | Blue | 240 Q | 2018– |
| 5811/1G-001 | 41 mm | 18k white gold | Blue | 26-330 S C | 2022– |
| 5990/1A-011 | 40.5 mm | Stainless steel | Blue | CH 28-520 C FUS | 2022– |
| 5990/1R-001 | 40.5 mm | 18k rose gold | Blue | CH 28-520 C FUS | 2021– |
| 7010/1R | 32 mm | 18k rose gold | — | E23-250 S C | — |
| 7118/1200A-001 | 35.2 mm | Stainless steel | Blue | 324 S C | 2020– |
| 7118/1A-001 | 35.2 mm | Stainless steel | Blue | 324 S C | 2015– |
About the Nautilus family
The Nautilus was introduced in 1976 with ref. 3700/1A, a steel sports watch designed by Gérald Genta with a rounded octagonal bezel, porthole-style case ears and an integrated bracelet. Its horizontally embossed dial has stayed a constant.
The ref. 5711/1A of 2006 became the best-known modern version, and its steel production ended in 2021. Other references include the 5712 with power reserve and moon phase, the 5726 annual calendar, the 5980 chronograph, the 5811/1G in white gold that followed the 5711, and ladies' models such as the 7118. Many use calibers from the 240 and 26-330 families. Dealers check the reference, dial colour, the Certificate of Origin and the number of bracelet links, and note whether the watch has been polished.
Quick answers
- What size is the Patek Philippe Nautilus 3700/1A?
- The Patek Philippe Nautilus 3700/1A has a 40 mm case, 7.6 mm thick.
- What movement does the Patek Philippe Nautilus 3700/1A use?
- It uses the automatic caliber 28-255 C.
- How water resistant is the Patek Philippe Nautilus 3700/1A?
- It is water resistant to 120 metres.
- Is the Patek Philippe Nautilus 3700/1A still in production?
- Discontinued.
- When did the Patek Philippe Nautilus 3700/1A come out?
- It was introduced in 1976.
- What is the Patek Philippe Nautilus 3700/1A made of?
- The case is stainless steel. Bracelet or strap: Nautilus bracelet, Stainless steel.
- What is the Patek Philippe Nautilus 3700/1A nicknamed?
- Dealers and collectors call it the “Jumbo”.
Catalog facts checked September 2026.