Rolex 3187
High confidenceSpecific to the 216570. A watch presented as a 216570 carrying a 3186 is a question — but the likeliest explanation is a misidentified reference rather than a counterfeit, because the 42mm and 40mm Explorer II cases are easily confused in photographs and differ by two millimetres.
Specifications
- Movement manufacturer
- Rolex
- Frequency
- 28,800 vph (4 Hz)
- Winding
- automatic
- Complications
- Centre seconds · Date · Independent local hour hand
- Shock protection
- Paraflex
Architecture
GMT caliber with Paraflex shock absorbers and a Parachrom hairspring, made for the 42mm Explorer II.
Related calibers
Related caliber
Rolex 3186
References using this caliber
- Rolex 216570Factory
Explorer II · Whole production
Provenance of this record
Sources & Evidence
Primary sourceManufacturer documentation
Rolex — Perpetual movements (official technical pages)
Rolex SA
- Accessed
- 2026-08-18
Cited for
This referenceHigh confidence
Last verified: Not yet reviewed