Patek Philippe
Patek Philippe Nautilus Annual Calendar 5726/1A-001
The Patek Philippe Nautilus Annual Calendar (reference 5726/1A-001) is a 40.5 mm stainless steel watch with a black dial. It runs on the automatic caliber 324 S QA LU 24H/303 with a 45-hour power reserve and is water resistant to 120 m. It was made from 2010 to 2019.
Specifications
Case
- Reference
- 5726/1A-001
- Collection
- Nautilus
- Case size
- 40.5 mm
- Thickness
- 11.3 mm
- Case material
- Stainless steel
- Case shape
- Other
- Crystal
- Sapphire
- Water resistance
- 120 m
- Bracelet / strap
- Nautilus bracelet, Stainless steel
Dial and bezel
- Dial
- Black
Movement
- Movement
- Automatic
- Caliber
- 324 S QA LU 24H/303 (base 324)
- Power reserve
- 45 hours
- Frequency
- 28,800 vph
- Jewels
- 34
- Functions
- Annual calendar, Moon phase, Day-date
Production
- Production
- 2010–2019
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 |
|---|---|---|---|---|---|
| 5726/1A-001 (This watch) | 40.5 mm | Stainless steel | Black | 324 S QA LU 24H/303 | 2010–2019 |
| 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 Annual Calendar 5726/1A-001?
- The Patek Philippe Nautilus Annual Calendar 5726/1A-001 has a 40.5 mm case, 11.3 mm thick.
- What movement does the Patek Philippe Nautilus Annual Calendar 5726/1A-001 use?
- It uses the automatic caliber 324 S QA LU 24H/303, with a 45-hour power reserve.
- How water resistant is the Patek Philippe Nautilus Annual Calendar 5726/1A-001?
- It is water resistant to 120 metres.
- Is the Patek Philippe Nautilus Annual Calendar 5726/1A-001 still in production?
- No. It was made until 2019.
- When did the Patek Philippe Nautilus Annual Calendar 5726/1A-001 come out?
- It was introduced in 2010 and made until 2019.
- What is the Patek Philippe Nautilus Annual Calendar 5726/1A-001 made of?
- The case is stainless steel. Bracelet or strap: Nautilus bracelet, Stainless steel.
Catalog facts checked September 2026.