Product Information
* Factory: QF Factory
* Brand: Rolex
* Collection: Day-Date
* Case Size: 40 mm
* Movement: 3255 Automatic Movement
* Alternative Movement Option: 2836 Automatic Movement
Technical Specifications
* Case Diameter: 40.0 mm
* Case Thickness: 12.5 mm
* Measured Weight: 189 g*
* Crystal: Sapphire Crystal
*The 189 g figure represents the measured weight of the individual watch inspected for this QC report. Actual weight may vary slightly between individual watches due to manufacturing tolerances, bracelet sizing and configuration differences.
Timegrapher Test Results
* Daily Rate: +5 Seconds/Day
* Amplitude: 265°
* Beat Error: 0.3 ms
* Beat Rate: 28,800 BPH
Testing Note
The readings above were recorded from this individual watch during its pre-shipment QC inspection. Mechanical movement performance may vary depending on mainspring power, watch position, temperature and testing conditions.
Movement Options: 2836 vs 3255
QF Factory offers the Day-Date 40 with different movement configurations, including 2836-based and 3255-style movement options.
The 2836 option is generally positioned as the simpler and more established movement choice, while the 3255 version is intended for buyers who place greater importance on a movement layout and specification closer to the reference being reproduced.
The movement version should therefore be confirmed before ordering, as the internal configuration may differ even when the exterior model appears similar.
QC Observation: Value and Version Updates
One of the more notable characteristics of the QF Factory Day-Date line is its relatively frequent version updating.
Frequent production updates can indicate that the model remains active in the factory’s production cycle, allowing details to be revised as newer batches are released.
From a buyer’s perspective, this is worth paying attention to because two watches sold under the same general model name may come from different production periods and may not have identical detail execution.
Rather than assuming every QF Day-Date is the same, it is more useful to confirm:
* the actual movement version,
* the production batch,
* the measured dimensions and weight,
* and the specific exterior details of the watch being inspected.
At its price level, the QF Day-Date 40 can be considered a version worth evaluating for buyers who prioritize a balance between specification, movement choice and overall cost.
Pre-Shipment QC Inspection
* ✔️ Movement operation checked
* ✔️ Timegrapher performance recorded
* ✔️ Crown winding and time-setting functions checked
* ✔️ Day and date change functions checked
* ✔️ Case dimensions measured
* ✔️ Individual watch weight measured
* ✔️ Sapphire crystal inspected
* ✔️ Dial, hands and day/date alignment checked
* ✔️ Bezel and exterior finishing visually inspected
* ✔️ Bracelet and clasp operation checked
* ✔️ Final pre-shipment inspection completed
