Movement Guide
Understanding the Clone Calibres Used in Our Watches
Movement numbers such as 4131, 4132, 4130, 3235, 3135 and 3285 identify different calibre families and function layouts. We match the clone calibre to the corresponding watch reference rather than treating movement numbers as simple quality grades.
The Basic Principle
The Movement Follows the Reference
Different generations and watch families use different movements. A newer reference may use a 4131, 3235 or 3285, while an older reference may correctly use a 4130 or 3135. Our goal is to use the clone calibre that corresponds to the movement designation and function set of the reference being reproduced.
We identify the movement family associated with the corresponding watch reference before confirming the clone calibre.
The expected date, GMT, chronograph, subdial and setting functions are checked against the calibre used in that reference.
The movement in the actual watch is then tested for function, timing behavior and power reserve before shipment.
Movement Families
Different Calibres Serve Different Functions
| Calibre | Typical Role | Main Functions | How We Treat It |
|---|---|---|---|
| 4131 | Modern Daytona-type chronograph references | Time display, central chronograph seconds, minute counter, hour counter, start / stop / reset | Matched to modern references using the 4131 function layout |
| 4132 | Daytona 126529LN / Le Mans-type reference | Time display, chronograph, 30-minute counter, 24-hour chronograph counter, start / stop / reset | Used where the corresponding reference calls for the 4132 layout |
| 4130 | Earlier-generation Daytona-type references | Time display and chronograph functions | Used for older references that pre-date the 4131 generation |
| 3235 | Modern date-equipped references | Hours, minutes, seconds, date and automatic winding | Used where the corresponding modern reference uses the 3235 family |
| 3135 | Earlier-generation date-equipped references | Hours, minutes, seconds, quick-set date and automatic winding | Used for older references associated with the 3135 family |
| 3285 | GMT references | Time, date, 24-hour display, second time zone and independently adjustable local hour hand | Used where the reference requires the 3285 GMT function layout |
This table explains the role of each calibre family. Exact movement selection follows the specific watch reference.
Calibre 3285
GMT Function With an Independently Adjustable Local Hour Hand
The 3285 family is used for GMT references that display an additional time zone in 24-hour format. A key part of the function is the independently adjustable local hour hand, which allows the local hour to be moved without resetting the minute hand or the GMT display.
What We Verify
- Automatic winding and crown operation
- Time-setting operation
- Independent local-hour adjustment
- 24-hour GMT hand operation
- Date behavior during local-hour adjustment
- Timing performance
- Actual power reserve testing
Calibre 4131
Modern Chronograph Function for Daytona-Type References
The 4131 family corresponds to modern Daytona references using the current chronograph layout. In our 4131 clone version, the chronograph functions are fully operational rather than decorative.
What We Verify
- Automatic winding and crown operation
- Chronograph start and stop
- Reset-to-zero behavior
- Central chronograph seconds
- Subdial operation
- Timing performance
- Actual power reserve testing
Calibre 4132
The 24-Hour Chronograph Layout Used for the 126529LN Reference
The 4132 calibre is associated with the Daytona 126529LN created around the 24 Hours of Le Mans theme. Its defining difference from the standard 4131 chronograph layout is the 24-hour chronograph counter.
Function Layout
- Hours and minutes
- Small seconds
- Central chronograph seconds
- 30-minute chronograph counter
- 24-hour chronograph counter
- Chronograph start / stop / reset
We match the 4132 clone to references that require this specific chronograph layout rather than substituting a standard 4131 function set.
Earlier Calibre Families
Older References Should Use the Movement Generation That Matches Them
A newer movement number is not automatically the correct choice for an older watch reference. When an earlier reference was built around an earlier calibre family, we keep that generation relationship instead of treating every watch as if it should use the newest movement.
Used for earlier Daytona-type chronograph references. The 4130 remains the correct match for references from the generation before 4131.
Used across earlier date-equipped references. Its core functions include automatic winding, hours, minutes, seconds and quick-set date.
Modern date references may use 3235, while other watch families use other calibre numbers. The correct movement is determined by the specific reference rather than by a single site-wide movement choice.
What We Measure
Movement Testing Before Shipment
Movement identification is only one part of the process. The individual watch is also tested for mechanical behavior and model-specific functions before shipment.
Our QC target is within ±5 seconds per day during testing.
Amplitude and beat error are reviewed as part of movement QC. They are interpreted according to the movement, winding state and test position rather than one universal public number.
We perform actual power reserve testing on the movement. We do not publish one universal reserve figure because results and expected ranges depend on the calibre and individual watch.
Function Testing
What We Check Depends on the Calibre
We check winding, crown positions, time setting, date correction, date change behavior and timing performance.
In addition to basic movement checks, we verify the 24-hour display, second time zone and independent local-hour adjustment where applicable.
We verify start, stop, reset, central chronograph seconds, subdial operation and return-to-zero behavior.
Movement QC
See How Watches Are Inspected Before Shipment
Our movement checks are part of the wider pre-shipment inspection process, which also covers exterior condition, functions, timing behavior and final approval.
Movement FAQ
Common Questions About Clone Calibres
What does a clone calibre number mean?
It identifies the movement family used to correspond with a specific watch reference and its function layout. Numbers such as 4131, 3235 and 3285 are not simple good-better-best quality grades.
Why do older and newer versions of a watch use different calibres?
Movement generations change over time. An older reference may correctly use a 4130 or 3135 family, while a newer reference may use 4131 or 3235. The correct choice follows the reference generation.
Is 4131 automatically better than 4130?
Not in the sense of choosing a higher number as an upgrade. They belong to different generations of Daytona chronograph movements. The correct movement depends on the reference being reproduced.
Does the 3285 clone support an independently adjustable local hour hand?
Yes. The 3285 clone version we use supports independent local-hour adjustment as part of its GMT function set.
Are the 4131 chronograph functions fully operational?
Yes. The 4131 clone version we use supports chronograph start, stop and reset, central chronograph seconds and functional subdials.
Do you test power reserve?
Yes. Power reserve is tested on the actual movement. We do not present one universal number for every calibre or individual watch.
What timing result must pass QC?
Our timing QC target is within ±5 seconds per day during testing.
Do you measure amplitude and beat error?
Yes. Both are reviewed during movement testing. The readings are interpreted in context with the calibre, winding state and test position.
