Rolex
Rolex Deepsea 126660
“D-Blue (blue gradient dial)”
The Rolex Deepsea (reference 126660) is a 44 mm Oystersteel and titanium watch. It runs on the automatic caliber 3235 with a 70-hour power reserve and is water resistant to 3900 m. It was made from 2018 to 2022.
Specifications
Case
- Reference
- 126660
- Nickname
- D-Blue (blue gradient dial)
- Collection
- Sea-Dweller
- Case size
- 44 mm
- Thickness
- 17.7 mm
- Case material
- Oystersteel and titanium
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 3900 m
- Bracelet / strap
- Oyster, Oystersteel bracelet
Dial and bezel
- Bezel
- Black Cerachrom unidirectional 60-min dive bezel
Movement
- Movement
- Automatic
- Caliber
- 3235
- Power reserve
- 70 hours
- Frequency
- 28,800 vph
- Jewels
- 31
- Functions
- Date, Dive bezel, Helium escape valve
Production
- Production
- 2018–2022
Dial versions
This reference was made with these dials and finishes.
126660 Black
126660-0001
Ring Lock
126660 D-Blue
126660-0002
Gradient blue-black · “D-Blue”
How it compares within the Sea-Dweller family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 126660 (This watch) | 44 mm | Oystersteel and titanium | — | 3235 | 2018–2022 |
| 116600 | 40 mm | Oystersteel | Black | 3135 | 2014–2017 |
| 116660 | 44 mm | Oystersteel and titanium | — | 3135 | 2008–2018 |
| 126067 | 50 mm | RLX titanium | Black | 3230 | 2022–2025 |
| 126600 | 43 mm | Oystersteel | Black | 3235 | 2017– |
| 126603 | 43 mm | Yellow Rolesor | Black | 3235 | 2019– |
| 136660 | 44 mm | Oystersteel and RLX titanium | — | 3235 | 2022– |
| 136668LB | 44 mm | 18k yellow gold | Blue | 3235 | 2024– |
| 16660 | 40 mm | Stainless Steel | Black | 3035 | 1978–1989 |
About the Sea-Dweller family
The Sea-Dweller was introduced in 1967 with ref. 1665 for professional saturation divers, adding a helium escape valve and a deeper water rating to the Submariner design. The ref. 16600 continued the line from the late 1980s, and the Rolex Deepsea joined in 2008 with its Ringlock case system and much greater depth rating.
In 2017 the Sea-Dweller grew to 43 mm with ref. 126600, which brought back a line of red text on the dial and added a Cyclops lens. A Rolesor version, ref. 126603, followed. The catalog also covers Deepsea references such as the 126660 and 136660, the yellow gold 136668LB and the RLX titanium Deepsea Challenge ref. 126067. Dealers note the dial version and, on Deepsea models, the dial colour.
Quick answers
- What size is the Rolex Deepsea 126660?
- The Rolex Deepsea 126660 has a 44 mm case, 17.7 mm thick.
- What movement does the Rolex Deepsea 126660 use?
- It uses the automatic caliber 3235, with a 70-hour power reserve.
- How water resistant is the Rolex Deepsea 126660?
- It is water resistant to 3900 metres.
- Is the Rolex Deepsea 126660 still in production?
- No. It was made until 2022.
- When did the Rolex Deepsea 126660 come out?
- It was introduced in 2018 and made until 2022.
- What is the Rolex Deepsea 126660 made of?
- The case is Oystersteel and titanium. Bracelet or strap: Oyster, Oystersteel bracelet.
- Which dials was the Rolex Deepsea 126660 made with?
- The catalog lists 2 dials: Black, Blue.
- What is the Rolex Deepsea 126660 nicknamed?
- Dealers and collectors call it the “D-Blue (blue gradient dial)”.
In the glossary
Catalog facts checked October 2026.