Chang Watchworks
Watch service Bangkok

What we offer

Three services, each carried out with full attention.

We do not offer everything — only what we do well. Battery changes, dial refreshing, and complete mechanical servicing, all with transparent pricing and clear timelines.

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Our approach

Each service starts with an honest look at what the watch actually needs.

We do not begin servicing until we have assessed the watch and agreed with the owner on what is needed. For simpler services — a battery change or a seal check — this assessment happens at drop-off. For mechanical services, we may take a day to look more carefully before confirming the scope.

If we find something additional during the work, we pause and get in touch rather than proceeding. The price stated at the start is the price paid, unless you have agreed to change the scope.

Assessment first

Agreement before work

Careful service

Written record

Quartz battery service

Service 01

Quartz Service & Battery

A tidy battery change with a movement check and a fresh seal, keeping a quartz watch running smoothly and comfortable around moisture. Suited to everyday and dress watches. Includes an exterior clean and a note on the next recommended check.

What's included

  • Appropriate battery fitted for the calibre
  • Movement inspection — coil, contacts, capacitor where relevant
  • Case seals checked and replaced if needed
  • Exterior clean of case and bracelet
  • Service note with recommended next interval

Process

  1. 01.Drop off — brief visual check at reception
  2. 02.Movement inspection and battery fitting
  3. 03.Seal check and case reassembly
  4. 04.Function check and exterior clean
  5. 05.Collection same day

Price

฿1,460

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Service 02

Hand & Dial Refresh

A gentle refresh of hands and dial appearance where suitable, with careful handling to keep original character intact. Helpful for watches that still run well but look tired. Includes a close inspection and honest advice if the work is not needed.

What's included

  • Close assessment of dial and hands before proceeding
  • Careful cleaning to remove surface dirt and oxidation
  • Hands reseated and aligned if disturbed
  • Honest advice if refresh would reduce originality
  • Full service note on work carried out

Process

  1. 01.Drop off with brief description of concern
  2. 02.Close inspection under magnification
  3. 03.Confirmation of approach with owner
  4. 04.Careful cleaning and hand realignment
  5. 05.Collection in a few days

Price

฿2,920

Enquire
Watch dial refresh
Complete mechanical service

Service 03

Complete Mechanical Service

A full mechanical service covering cleaning, lubrication, and gentle regulation, returning steadier timekeeping to a well-loved automatic. Intended for watches worn for many years. Scheduled over two to three weeks with friendly updates. Includes a timing report and a seal check.

What's included

  • Full disassembly of movement
  • Ultrasonic cleaning of all parts
  • Replacement of all lubricants
  • Gentle regulation for improved accuracy
  • Timing report (before and after measurements)
  • Case seal check on reassembly

Process

  1. 01.Drop off and initial assessment (day one)
  2. 02.Disassembly and pre-service timing check
  3. 03.Cleaning, part inspection, lubrication
  4. 04.Reassembly, regulation, post-service timing
  5. 05.Collection with timing report — typically 2–3 weeks

Price

฿4,120

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Choosing a service

Not sure which service fits your watch?

Here is a simple guide. If you are still unsure after reading, just drop us a message — we are glad to help you work it out.

If your watch… Suggested service Price
Has stopped or battery seems flat Quartz Service & Battery ฿1,460
Still keeps time but the dial looks tired Hand & Dial Refresh ฿2,920
Is an automatic worn for years without a service Complete Mechanical Service ฿4,120
Is losing or gaining time noticeably Complete Mechanical Service ฿4,120
You are unsure what it needs Come in — we will take a look No charge

Across all services

The same standards apply regardless of service type.

No work without agreement

Scope and price are agreed before work begins. Unexpected findings are communicated before we touch anything additional.

Protected handling throughout

Protective covers on cases and dials during work. Individual storage during multi-day services.

Seal check as standard

Case seals are inspected on every service. In Bangkok's climate, this is not optional.

Written service record

Every watch leaves with a written note of what was done, parts used, and next interval.

Pricing in Thai baht, confirmed upfront

All prices are in Thai baht and stated before work starts. No foreign currency pricing or hidden fees.

Refused when not appropriate

If a watch needs something outside our scope, we say so and suggest where to take it. No job accepted that we cannot do properly.

Pricing summary

Prices stated, no additions without agreement.

Quartz Service & Battery

฿1,460

Same-day turnaround

Enquire

Hand & Dial Refresh

฿2,920

A few days turnaround

Enquire

Complete Mechanical

฿4,120

2–3 week turnaround

Enquire

Not sure where to start?

Bring the watch in, or send a message first.

We are happy to look at a watch and give you an honest opinion before you commit to any service. No charge for a conversation.

Get in Touch