I brought in a modern Seiko that had been sitting in a drawer for three years. I was curious more than concerned — the watch was running, but I wanted to know where it stood before deciding whether to service it. The diagnostic was thorough. The timing machine figures they gave me were something I had not thought to ask for before. The written summary was clear and not oversold — they told me the amplitude was low and the lubricants were overdue, but they did not push the service on me.
What clients say after the work is done.
These accounts come from owners who brought watches to the bench and received their piece back with a written record of what was done. Their words are their own.
← Back to HomeFrom owners who have been through the process
My dive watch is a tool I depend on, not a display piece. I had the water resistance restoration done here after the crown started feeling stiff and I noticed the crown seal looked dry on inspection. They replaced everything, ran both the dry and wet pressure tests, and gave me a document with the achieved rating. That paper matters to me — I know exactly what the watch can handle rather than assuming the original spec still applies after seven years of use.
The turnaround was a bit longer than I hoped — I was visiting Bangkok for only a week, so I had to arrange for the watch to be sent back to me, which added some back-and-forth. That aside, the work itself was good. The movement service brought the timekeeping from plus twelve seconds a day down to plus one, which is close enough to the published spec for this calibre. The report showed me the before and after figures, which I appreciated.
I have used two other workshops in Bangkok for movement services over the years. The difference at Krung Watch is in the paperwork, which sounds minor but is not. Having the timing machine figures from before and after the service gives me something to compare against at the next service interval. The other shops gave me nothing in writing — I was just expected to trust that the work had been done.
I used the diagnostic service before deciding whether to buy a pre-owned Omega. The assessment gave me a clear condition report and told me the movement was running well but the mainspring tension was on the lower end of acceptable. That information changed what I was willing to pay for the piece. Worth every baht, and I intend to bring it back for a full service once it is mine.
My old Citizen had not been touched in nearly ten years. The full service brought it back to life — it is now running within a few seconds a day, which is more than I expected given the state it was in. They called me before sourcing a replacement crown seal because the original had deteriorated significantly and they wanted to confirm I was happy with a compatible part. I was, and they got on with it.
Three watches, three different situations
Pre-purchase condition unknown
An owner was considering buying a pre-owned modern automatic from a private seller. The watch was running and looked presentable, but there was no recent service history and the asking price was significant.
Diagnostic assessment carried out
The watch was logged and placed on the timing machine. Rate, amplitude, and beat error were recorded. External condition was noted. The movement was not opened — this was a non-invasive assessment only.
Informed negotiation possible
The report showed amplitude at the lower end of acceptable and indicated a service would be due within eighteen months at current lubricant degradation rates. The owner used this to negotiate a reduced purchase price and budgeted accordingly for the next service.
"The report told me exactly what I needed to know before I handed over the money."
Inconsistent timekeeping after years of wear
A daily-worn automatic was gaining between eight and fifteen seconds per day — variable, which suggested something other than a simple regulation issue. It had last been serviced roughly six years prior at a different workshop, with no documentation.
Full service following disassembly findings
The diagnostic showed amplitude of 205 degrees in the crown-up position — below specification. Disassembly revealed a hairspring that had sustained minor contact with the regulator, likely from a knock. The maker procedure was referenced for lubrication and regulation.
Rate within specification, documented
After service, the timing machine showed amplitude of 288 degrees and a rate of plus three seconds per day — within published specification for the calibre. The before and after figures were included in the service report along with a note on the hairspring finding.
"They found something the previous workshop had either missed or not looked for."
Dive watch with aging seals and unknown current rating
A diver who uses their watch for recreational diving brought in a sports model rated to 200 metres. The watch was five years old and had never had seals replaced. The crown felt slightly less precise than before.
Gasket replacement and pressure testing
All serviceable gaskets were replaced, the crystal seal was inspected and renewed, and the crown was lubricated. A dry pressure test was passed before proceeding to a wet test. The testing was conducted against the case manufacturer's rated parameters.
Current rating documented, confidence restored
The watch passed the wet pressure test at its rated depth equivalent. The achieved rating was noted on the service record. The owner now has a document with a current date and a specific tested pressure figure — something the original case specification does not provide.
"I can dive knowing the seal integrity was tested last month, not ten years ago when the watch was made."
Find the workshop
312 Phayathai Road
Ratchathewi, Bangkok 10400
Mon–Fri: 10:00 – 18:00
Sat: 10:00 – 15:00
Sun: Closed
Ready to bring your watch in?
The diagnostic assessment is the right starting point for most owners. A written report of current condition, with no further obligation to proceed.
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