Customer Service

A specialist watchmaker analyses the reason for which the watch has been submitted for maintenance and identifies the watch from its unique serial number.

Disassembly of the case and its components (glass, back, bezel, various seals, etc.) and separation of the movement.

Full part-by-part disassembly of the movement.

Polishing of the case to restore the original lustre to a watch which has been worn for some time.

Cleaning of the case in special baths used for ultrasound treatment.

Each component of the disassembled movement is placed in containers specific to small watch parts.

These containers are in turn placed in specific baths inside an ultrasonic cleaning machine.

Reassembly of the case and replacement of the necessary components (glass, pushers, tube, seals, etc.).

Reassembly and oiling of movement to Longines specifications.

Assembly of movement (including dial and hands) in the case and complete reassembly of the watch

Final technical (precision, power reserve, water resistance) and cosmetic checks on the watch, according to Longines specifications.

A specialist watchmaker analyses the reason for which the watch has been submitted for maintenance and identifies the watch from its unique serial number.

Opening of the case and disassembly of its components (glass, back, bezel, various seals, etc.) and separation of the movement.

Cleaning of the case by immersion in special products which enable ultrasound treatment.

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Final check with inspection of technical functions and aesthetic appearance, according to Longines specifications.

Opening the watch case back.

Battery check using a specific device.

Supply power directly to movement using the same device to check it is operating correctly.

While it is still being powered by the equipment, check and, if necessary, adjust precision.

Change the battery for a new one.

Exchange the case back seal(s) to ensure the watch's water resistance.

Closure of the case back.

Test the water resistance of the case.

A specialist watchmaker conducts a detailed, full examination to establish the nature of the tasks to be performed and identifies the watch model from its unique serial number.

Disassembly of the case and its components (glass, back, bezel, seals, etc.) and separation of the movement from the case.

Polishing of the case to the original specifications, taking the age of the watch into consideration.

Cleaning of the case by immersion in special baths used for ultrasound treatment.

Deep cleaning of all the components of the disassembled movement, using ultrasound and specific baths. During this process, the washing basket rotates slowly as it is lowered.

Examination of each component to establish whether signs of deterioration are present. Where applicable, repair or replace components.

A new part is taken from stock as a replacement for a part which has been identified as defective.

Adjustment of the part according to requirements. In this case, adjustment of the wheel on the pivoting tool.

Assembly and oiling of movement to Longines specifications.

Fitting the movement, complete with its dial and hands, inside the case and securing it in place.

Testing the precision of the watch using a measurement and calibration device and adjustment to Longines specifications.

Comparison of the watch upon arrival at the Longines workshops and after restoration.