Bangkok · Silom

Careful work on watches that matter to you

siamchra is a specialist workshop on Si Lom Road. We open movements under controlled conditions, work with calibre-appropriate materials, and return each piece with a written account of what was done.

Request a Service View Services

+66 2 635 7129 [email protected] Written condition reports No work without your approval

What we do

Three services, clearly described

Each service is scoped carefully so that owners understand exactly what will happen before any work begins.

SVC-001

Diagnostic & Condition Report

The technician opens the caseback, inspects the movement under magnification, photographs key components, and produces a written report. No work is carried out without your separate agreement.

Written assessment you keep
Photographs of key components
Options explained clearly

฿4,300 Book Now

SVC-002

Full Service — Modern Automatics

Complete servicing for modern automatic watches across Japanese, Swiss, and German calibres. Includes disassembly, ultrasonic cleaning, lubrication with calibre-appropriate materials, gasket replacement, regulation, and pressure testing.

3–4 weeks in workshop
Performance summary included
Pressure tested after service

฿9,800 Book Now

SVC-003

Complication Recalibration

For chronograph, GMT, annual calendar, or moonphase complications showing inaccuracy. The technician traces the issue, recalibrates the relevant subsystem, and verifies the result over a multi-day observation cycle.

Multi-day observation cycle
Approved spares where needed
Performance report included

฿15,000 Book Now

Why siamchra

How this workshop operates

Written reports, not verbal summaries

Every service produces a document that describes what was found, what was done, and the measured results. You receive this alongside the watch.

Work under controlled conditions

Movements are opened in a clean workshop environment. Inspection uses calibrated magnification and photographic documentation before any intervention.

Separate approval before any work

The diagnostic report is issued first. Work only proceeds after you review findings and confirm. There is no assumption of consent.

Calibre-appropriate lubricants

Lubrication choices follow manufacturer technical specifications for each calibre. Not one standard lubricant applied across all movements.

Fixed address in Silom

The workshop is at a permanent address on Si Lom Road. You can visit, discuss the piece, and collect in person. No courier-only arrangement.

Pressure testing after case closure

Water resistance is verified before the watch is returned. This applies to full service work where the case is opened during the process.

Get started

Not sure which service your watch needs?

The diagnostic report is a good starting point. Send us a brief description of what you have noticed and we can discuss the most appropriate next step.

+66 2 635 7129 [email protected]

Common questions

Questions about the service

How do I begin — do I need to visit in person?

You can start by calling or sending a message through the contact form. Describe the watch and what you have noticed. We will advise whether an in-person visit is the right first step or whether you can bring the piece directly for diagnostic inspection.

What calibres and brands does the workshop handle?

The full service covers modern automatic calibres from mainstream Japanese, Swiss, and German manufacturers. This includes movements from Seiko, Orient, ETA-based calibres, and many others. The complication recalibration service addresses chronograph, GMT, annual calendar, and moonphase modules. Contact us with the calibre reference if you are uncertain.

How long does the full service take?

The full service for modern automatics typically takes three to four weeks from the point of drop-off. The complication recalibration requires additional time due to the multi-day observation cycle — typically four to six weeks. We will give a specific estimate when the watch is received and inspected.

Can I receive the diagnostic report and then decide elsewhere?

Yes. The diagnostic and condition report is a standalone service. The report belongs to you and may be shared with any other workshop you choose. We do not require commitment to further work as a condition of producing the report.

What does pressure testing involve after a service?

After case reassembly, the watch is placed in a pressure tester to verify that the seals hold to the manufacturer's specified depth rating. This is included as part of the full service process whenever the case is opened. The test result is noted in the written summary.

How is payment handled and what currency is accepted?

All prices are quoted and invoiced in Thai Baht (฿). Payment is collected at collection, after work is complete. We accept cash and Thai bank transfers. No deposit is required before the diagnostic report is delivered.

Workshop location

Find the workshop

89 Si Lom Road, Suriya Wong, Bang Rak, Bangkok 10500

Get in touch

Contact the workshop

Workshop details

Phone

+66 2 635 7129

[email protected]

Address

89 Si Lom Road, Suriya Wong
Bang Rak, Bangkok 10500

Workshop Hours

Monday – Friday: 09:00 – 18:00

Saturday: 10:00 – 15:00

Sunday & Public Holidays: Closed

Note

Visits for drop-off and collection are welcome during workshop hours without appointment. For an initial discussion about your piece before bringing it in, calling ahead is appreciated.