Rolex Sea-Dweller
Most Rolex Sea-Dweller references take a 20 mm watch strap: 15 of 21. The lug width follows the case size: 40 mm case → 20 mm and 44 mm case → 21 mm.
Rolex Sea-Dweller lug width by case size
21 references measured. Updated 2026-11-10.
| Case | Lug width | References | Watch strap attachment | For example |
|---|---|---|---|---|
| 40 mm | 20 mm | 15 | — | 116600, 16600 Comex MK1, 16600 Comex MK2 |
| 43 mm | 21 mm · 22 mm on 1 | 2 | — | 126600 |
| 44 mm | 21 mm | 4 | — | 116660, 126660, 136660 |
References that take a different watch strap
- 126603-0001: 22 mm, not the 21 mm of most 43 mm cases
Every Rolex Sea-Dweller reference
- Sea-Dweller 116600116600
20 mm - Sea-Dweller 116660116660
21 mm - Sea-Dweller Deepsea Challenge126067-0002
20 mm - Sea-Dweller 126600126600
21 mm - Sea-Dweller Stainless Steel / Yellow Gold / Black126603-0001
22 mm - Sea-Dweller 126660126660
21 mm - Sea-Dweller 136660136660
21 mm - Sea-Dweller 136668lb136668lb
21 mm - Sea-Dweller 16600 Comex MK116600 Comex MK1
20 mm - Sea-Dweller 16600 Comex MK216600 Comex MK2
20 mm - Sea-Dweller 16600 Comex Service16600 Comex Service
20 mm - Sea-Dweller 16600 Polizia di Stato16600 Polizia di Stato
20 mm - Sea-Dweller 16600 SuperLuminova16600 SuperLuminova
20 mm - Sea-Dweller 16600 Tritium16600 Tritium
20 mm - Sea-Dweller 16600T16600T
20 mm - Sea-Dweller 1665 (Double Red / Great White)1665
20 mm - Sea-Dweller 16660 Comex16660 Comex
20 mm - Sea-Dweller 16660 Comex Matte16660 Comex Matte
20 mm - Sea-Dweller 16660 Gloss16660 Gloss
20 mm - Sea-Dweller 16660 Matte Mark 116660 Matte MK1
20 mm - Sea-Dweller 16660 Matte MK216660 Matte MK2
20 mm - Sea-Dweller 16660 Tiffany16660 Tiffany
20 mm
Other Rolex families
Inside each one the lug width often changes: it is the reference that decides.
- Datejust 31 1,212
- Day-Date 36 744
- Datejust 36 649
- Lady-Datejust 463
- Daytona 240
- Day-Date 40 161
- Datejust 41 126
- Sky-Dweller 97
- Submariner 82
- Pearlmaster 62
- Yacht-Master 57
- GMT-Master 54
All Rolex families → · Why the size changes inside a family →