Series : DAYTONA
Model Number : 126509-0001
Movement : Automatic
Power Reserve : Caliber Rolex 4131, 72Hours
Case Diameter : 40mm
Case Thickness : 11.9mm
Factory : Clean Factory / VSF(VS Factory)
Mirror Material : Resistant Sapphire Crystal
Dial Colour : Black
Strap Colour : Silver
Strap Material : 18kt White Gold
Clasp : Folding Clasp
Gender : Mens
Dial Composition — Construction Geometry
Dial Composition on 126509-0001 is treated strictly as dial composition construction geometry. Repeated dial composition shapes around the 40mm case are separated from color and gloss; dial composition interfaces are recorded before cosmetic impressions. If dial composition conflicts with the Black or 18kt White Gold configuration, that dial composition conflict remains visible in the assessment.
Coronet Geometry — Genuine Study
Coronet Geometry evidence for 126509-0001 uses coronet geometry against a same-generation genuine Rolex. Within coronet geometry, the Black and 40mm become reference anchors; within coronet geometry, the 18kt White Gold remains a configuration cross-check. Only coronet geometry observations from the matching 126509-0001 generation receive direct comparison weight.
Hand Reach — Functional Check
Hand Reach supplies a separate hand reach functional test for 126509-0001. The listed Automatic is checked through hand reach behavior or hand reach architecture; the movement name never substitutes for hand reach evidence. After hand reach testing, the hand reach result is compared with the external Black and 18kt White Gold configuration of 126509-0001.
Day Aperture — Genuine Study
Day Aperture evidence for 126509-0001 uses day aperture against a same-generation genuine Rolex. Within day aperture, the Black and 40mm become reference anchors; within day aperture, the 18kt White Gold remains a configuration cross-check. Only day aperture observations from the matching 126509-0001 generation receive direct comparison weight.
Crystal Edge — Functional Check
Crystal Edge supplies a separate crystal edge functional test for 126509-0001. The listed Automatic is checked through crystal edge behavior or crystal edge architecture; the movement name never substitutes for crystal edge evidence. After crystal edge testing, the crystal edge result is compared with the external Black and 18kt White Gold configuration of 126509-0001.
Lug Symmetry — Genuine Study
Lug Symmetry evidence for 126509-0001 uses lug symmetry against a same-generation genuine Rolex. Within lug symmetry, the Black and 40mm become reference anchors; within lug symmetry, the 18kt White Gold remains a configuration cross-check. Only lug symmetry observations from the matching 126509-0001 generation receive direct comparison weight.




























William Robinson –
I wasn’t trying to make a statement with it; I wanted something I could actually use regularly. The design is fairly restrained, with black dial and white dial providing the main point of interest. I found the fit easy enough to adjust, which was important because I wanted to wear it regularly. The Rolex styling is close to what I was looking for. Nothing dramatic, just a purchase that worked out well for me.