A. Lange & Söhne 1815 730.032 Tourbillon Pre-Shipment QC Review

A. Lange & Söhne 1815 730.032 Tourbillon Pre-Shipment QC Review

The A. Lange & Söhne 1815 730.032 Tourbillon is centered around its manual-winding tourbillon movement, making movement operation and timegrapher performance particularly important parts of the pre-shipment QC inspection.

This specific watch measured 41mm in width, 13.3mm in thickness and 90g in weight, with a sapphire crystal.

During the timegrapher test, the movement recorded a 0-second daily rate, 301° amplitude, 0.1ms beat error, and a beat frequency of 21,600 BPH.

QC Test Results

Inspection Item Measured Result
Model A. Lange & Söhne 1815 730.032 Tourbillon
Movement Manual-Winding Tourbillon
Daily Rate 0 s/day
Amplitude 301°
Beat Error 0.1ms
Beat Rate 21,600 BPH
Crystal Sapphire Crystal
Case Width 41mm
Case Thickness 13.3mm
Measured Weight 90g

These figures represent the actual measurements of this specific QC sample. Small variations may occur between individual watches due to production tolerances, winding state, testing position and measurement methods.

Manual-Winding Tourbillon Movement

This watch is equipped with a manual-winding tourbillon movement.

Unlike an automatic movement, a manual-winding movement requires the wearer to wind the watch through the crown to maintain sufficient power reserve. For this reason, the winding state should also be considered when evaluating timegrapher readings.

The tourbillon mechanism is one of the main mechanical features of this model and should be visually inspected during QC to confirm smooth and continuous operation.

Timegrapher Performance

The movement produced the following results during testing:

* Daily Rate: 0 seconds/day
* Amplitude: 301°
* Beat Error: 0.1ms
* Beat Rate: 21,600 BPH

A daily rate of 0 seconds indicates that no measurable daily gain or loss was recorded under this specific test condition.

The 301° amplitude shows a strong winding state during testing, while the 0.1ms beat error was also well controlled.

These readings reflect the watch at the time of testing. Actual daily accuracy can vary depending on winding level, temperature, resting position and wearing conditions.

41mm Width and 13.3mm Thickness

This specific watch measured 41mm in width and 13.3mm in thickness.

For a tourbillon watch, dimensions are an important part of the overall assessment because the movement architecture can influence case thickness.

The actual 41mm × 13.3mm measurements provide a useful reference for understanding the physical proportions and side profile of this particular version.

90g Measured Weight

The measured weight of this specific watch is 90g.

Combined with the 41mm case width, the relatively moderate weight helps prevent the watch from feeling excessively heavy on the wrist.

Weight can vary slightly between individual examples depending on the strap, buckle and production tolerances, so the 90g figure should be treated as the actual result of this QC sample.

Sapphire Crystal and Exterior QC

The watch is fitted with a sapphire crystal.

In addition to movement testing, exterior QC for this model should focus on the dial layout, hands, hour markers, tourbillon opening, case finishing, crown, strap connection and visible movement components.

For a watch where the tourbillon is a major visual and mechanical feature, checking the actual movement operation is especially important rather than evaluating the watch from static photos alone.

Overall QC Assessment

Based on this pre-shipment inspection, the A. Lange & Söhne 1815 730.032 Tourbillon produced strong test results.

The manual-winding tourbillon movement recorded 0 seconds/day, a 301° amplitude, 0.1ms beat error, and 21,600 BPH during testing.

The watch measured 41mm in width, 13.3mm in thickness, and 90g in weight, with a sapphire crystal.

For this model, the most important QC points are not only the exterior details but also the tourbillon operation, manual-winding function and movement stability. These areas should all be checked before shipment to provide a more complete assessment of the individual watch.

FAQ | A. Lange & Söhne 1815 730.032 Tourbillon

What type of movement does this watch use?
This version is equipped with a manual-winding tourbillon movement.

What were the timegrapher results?
The test recorded 0 seconds/day, 301° amplitude, 0.1ms beat error, and a beat frequency of 21,600 BPH.

Does the movement require manual winding?
Yes. This is a manual-winding movement and requires winding through the crown to maintain sufficient power.

What are the measured dimensions?
This specific watch measured 41mm in width and 13.3mm in thickness.

How much does this watch weigh?
The measured weight of this specific QC sample is 90g.

What should be checked during QC on a tourbillon watch?
In addition to exterior finishing, the tourbillon should be observed for smooth operation. Manual winding, time-setting, movement stability and overall mechanical operation should also be tested before shipment.