
After-sales service and
repairs in Sierre
At Gil Bonnet & Fils, every piece deserves tailored attention. Whether it’s a watch service, a repair of an antique clock, or the maintenance of a precious piece of jewelry, our workshop supports you with expertise and precision.
Watchmaking services for watches & clocks | Jewelry repair and maintenance | Jewelry service
Watchmaking services

Strap replacement
We offer a wide selection of leather, steel, or textile straps, suitable for all cases. Installation is carried out with care in the boutique, with the option of on-site sizing. This service also includes checking the spring bars and fittings to ensure the security of your watch.

BATTERY REPLACEMENT
Battery replacement with mechanism check to ensure your watch works properly.

POLISHING AND CLEANING
Professional cleaning and polishing of the case and bracelet to restore all its shine to your watch.

COMPLETE SERVICE *
Full service including disassembly, cleaning, lubrication, adjustment, and movement accuracy testing.

MOVEMENT REPAIR
Work on mechanical, automatic, or quartz movements – restoration or replacement of parts.

GLASS REPLACEMENT
Replacement of scratched or broken glass for a watch like new.

CROWN OR PUSHER REPLACEMENT
Restoration of control elements to ensure water resistance and ease of use.

Water-resistance restoration
Pressure testing and gasket replacement to ensure optimal protection against water and humidity.

DIAGNOSIS AND EXPERTISE
Careful analysis of the watch to assess its condition and the repairs needed.

WATCH MAINTENANCE ENGRAVING
Refreshing engravings: dates, initials, symbols, or personal messages.

DEMAGNETIZATION
If your watch runs fast or slow unusually, it may have been magnetized. Demagnetization restores its accuracy.

PRECISION ADJUSTMENT
Fine adjustment of the watch’s rate to improve its accuracy (fast/slow), especially after a drop or a temperature variation.

REPLACEMENT OF STAFFS OR WINDING STEMS
Repair or replacement of damaged internal components (balance staff, winding stem, etc.).

HAND REALIGNMENT
Correction of the alignment of the hands in case of misalignment or contact.

REPLACEMENT OR ADJUSTMENT OF THE DEPLOYANT CLASP
Replacement or adjustment of clasps to ensure safety and comfort.

CHIMING WATCH / ALARM REPAIR
For watches equipped with sound complications: alarm, bell, hour chiming, etc.
Maintenance and repair of clocks
Mechanical

Complete service of a regulator clock
We completely disassemble the mechanism, clean each part, replace worn elements, and make the necessary adjustments to ensure precise and reliable operation of your pendulum clock

Complete service of a Neuchâtel clock
We perform a complete service of your Neuchâtel clock: disassembly of the movement, meticulous cleaning, replacement of worn parts, and precision adjustments. This service restores your Neuchâtel clock’s reliability, precision, and value.

Complete service of a Morbier clock
We provide a complete service for your Morbier clock: disassembly of the mechanism, thorough cleaning, replacement of faulty parts, and precise movement adjustment. This intervention restores your Morbier clock to proper working order and its original charm.

Complete service of a clock with a Paris movement
We carry out a complete service of your clock with a Paris movement: full disassembly of the mechanism, careful cleaning, component inspection, and precision adjustment. This service restores proper operation and reliability to your clock with a Paris movement.
Quartz

Quartz movement replacement
We replace the faulty quartz movement of your clock or watch with a new quality mechanism, guaranteeing precise and reliable timekeeping. Replacing the quartz movement extends the life of your piece while ensuring proper operation.

Adjustment and synchronization
We adjust and synchronize your quartz clock to correct any time discrepancies and restore accurate display. This intervention ensures perfect coordination between the hands and the quartz mechanism.

Battery replacement
We replace the battery in your clock or quartz watch with quality batteries to ensure optimal and long-lasting operation. The battery replacement is carried out with care, respecting the mechanism and water resistance when necessary.
Jewelry Services

Restoration of damaged or broken rings, necklaces, bracelets, and earrings.

Maintenance to preserve the shine and brilliance of your jewelry, with professional treatment.

Refreshing existing engravings or adding text, symbols, or dates to your jewelry.

Adjusting your ring size (enlarging or reducing) for optimal comfort.

Reinforcing or replacing prongs to secure the stone and prevent any risk of loss.

Replacing faulty or worn clasps with similar or reinforced models.

Restringing and rethreading of necklaces
Restringing necklaces or bracelets (beads, stones, etc.) with possible replacement of the thread.

Setting precious or semi-precious stones with secure setting, respecting the original piece of jewelry.
* Complete services come with a 24-month warranty.
Our after-sales partner brands
At Gil Bonnet & Fils, we are an authorized service center for many prestigious watch and jewelry brands.
This allows enthusiasts and owners of exceptional pieces to enjoy, directly in Sierre, an official after-sales service, with original parts and according to manufacturer standards – without having to send their watch or jewelry outside Valais.
Autre marques
We also carry out after-sales service on any other Swiss brand, to guarantee quality service tailored to your needs.
Repair Process
Bénéficiez d’un service après-vente simple et efficace en suivant ces 5 étapes :
PROCESS STEPS:
You can drop off your watch or jewelry in store or send it to us securely by post (shipping costs borne by the customer). For clocks, an on-site home visit service is available.
Our experts analyze the item to identify the necessary repairs and check whether it is still under warranty.
Under warranty (purchased at Gil Bonnet & Fils): Repair at no charge.
Under warranty (purchased elsewhere): Shipping and insurance costs borne by the customer.
Out of warranty: A detailed quote is prepared.
Once the quote is approved, we will provide you with an estimated repair time.
Our experts carry out the repair in compliance with brand standards. You are informed as soon as the work is complete.
You can pick up your watch or jewelry in store or opt for secure home delivery (shipping costs borne by the customer).
Repairs & adjustments in our workshop
We handle repairs, adjustments, or re-engraving directly in our workshop in downtown Sierre. Each piece is treated with care, respecting its history and value. You can drop off your item on site or contact us to arrange shipping.
Discover who we are and how we work.

