About Horolune
A workshop built on
patience and precision.
Since 2007 we have worked quietly in Silom, returning watches to their owners in better condition than we received them — with documentation and no surprises.
Back to HomeOur Story
How Horolune came to be
Horolune opened in 2007 on Thanon Si Lom after its founder, Khun Prasit Wongsawat, spent twelve years working alongside Swiss-trained technicians at a regional service centre. He wanted to run a workshop that operated differently — one where owners understood what was happening to their watches and where every decision was made in writing before a tool was picked up.
The name Horolune combines horology — the study and measurement of time — with lune, the French word for moon. It reflects the workshop's interest in the slower, quieter rhythms of mechanical timekeeping, as opposed to the pace of modern electronics.
Over seventeen years the workshop has grown from a two-bench space to a six-person team, all trained in-house. The founding principle has not changed: describe the work, agree the cost, do it properly, and hand it back with a record.
Mission & Values
What guides our work
Transparency first
Every assessment is documented. We explain what we find and let the owner decide.
Preserve, don't over-restore
We remove as little original material as possible. A watch's history is part of its character.
Written records for everything
Inspection notes, parts replaced, test results — all documented and given to the owner.
In-house only
No subcontracting. Every piece stays in our Silom workshop from intake to collection.
The People
Our workshop team
A small team, each with a defined area of focus. No one here is a generalist by accident.
Prasit Wongsawat
Founder & Lead Watchmaker
Seventeen years of movement work with a focus on crown, stem, and escapement servicing. Trained under Swiss-certified technicians before founding Horolune in 2007.
Nattiya Limthong
Case Finishing Specialist
Responsible for all case polishing and brushing work. Nattiya developed the workshop's hand-guided finishing protocol used across stainless steel and gold-tone cases.
Arthit Kongkam
Water-Resistance Technician
Manages gasket replacement and pressure testing using the workshop's calibrated dry and wet equipment. Arthit documents and signs off on every pressure test certificate issued.
How We Work
Workshop standards and protocols
Written Intake Assessment
Every watch is assessed and documented on arrival. Condition, visible issues, and requested work are noted before any handling begins.
Secure Storage Protocol
Watches in progress are stored in individual labelled trays in a locked cabinet. Only the assigned technician handles the piece during work.
Calibrated Test Equipment
Pressure testing instruments are calibrated annually. Results are traceable and documented on the service record provided to the owner.
Parts Sourcing Transparency
We confirm part availability and origin before work begins. If an original-spec part is unavailable, we explain alternatives in writing before proceeding.
Owner Data Handling
Contact details collected at intake are used only for service communication. We do not share or sell customer information. Data is retained only for service history records.
Final Quality Review
Each completed job is reviewed by a second technician before the owner is contacted for collection. Any discrepancy against the agreed service scope is flagged internally first.
Workshop Background
What watch repair looks like at Horolune
Bangkok has a large and varied watch community — collectors who have lived here for decades, professionals who travel with mechanical pieces, and individuals who have inherited a watch that holds personal value and want it kept in order. Horolune works with all of these people from a single workshop on Thanon Si Lom in Bang Rak.
Crown and stem repairs are among the most frequently requested services we handle. A watch crown that spins loosely, pulls away from the case, or resists winding is not a cosmetic issue — it affects the watch's ability to be set and wound correctly, and in water-rated models it compromises the seal. We examine the stem, crown thread, and tube before quoting, because what appears at the surface often points to wear further inside the setting mechanism.
Case polishing draws requests from two distinct groups: owners who want a dress watch returned to a cleaner appearance, and owners who are uncertain whether to polish at all. We treat the second group's hesitation as reasonable. Brushed finishes on tool watches and contrasting polish-and-brush zones on dressier pieces can be difficult to restore once disrupted. Our finishing work follows the original surface zones, and we document our approach on the service record so future technicians — wherever the watch ends up — understand what was done.
Water-resistance testing is often overlooked until water has already reached the movement. We suggest testing after any crown or caseback opening, after a battery change, and before extended water exposure — whether swimming or rainy season commuting in Bangkok. A written result is issued at collection.
The workshop does not operate on a volume model. A limited number of pieces are accepted each month so that each job receives adequate time. This approach tends to suit owners who value careful handling over fast turnaround, and who want a service record they can refer to in the future.
Ready to begin?
Bring your watch in for a look
Initial assessments carry no obligation. We describe what we find and you decide whether to proceed.
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