Omega Seamaster Prices in Bangkok, Every Reference — September 2026
The Seamaster is Omega's biggest family. The one name covers a serious dive watch, a vintage-styled diver and the Aqua Terra, which is really a dress-casual watch that happens to be water resistant. Used prices differ accordingly, so the table below separates them by reference.
| Reference | Size / material / movement | Bangkok pre-owned range (THB) | Our model page |
|---|---|---|---|
| 210.30.42.20.03.001 Diver 300M blue | 42mm steel, cal. 8800 | 145,000–185,000 (median 162,000) | Seamaster 300M 210.30 |
| 210.30.42.20.01.001 Diver 300M black | 42mm steel, cal. 8800 | 145,000–185,000 (median 155,000) | Seamaster 300M 210.30 |
| 215.30.44.21.01.001 Planet Ocean 600M | 43.5mm steel, cal. 8900 | 125,000–140,000 † | — |
| 220.10.41.21.03.001 Aqua Terra 150M 41mm | 41mm steel, cal. 8900 | 165,000–215,000 (median 185,000) | Aqua Terra 220.10 |
| 220.10.38.20.02.001 Aqua Terra 150M 38mm | 38mm steel, cal. 8800 | 165,000–215,000 (median 172,000) | Aqua Terra 220.10 |
| 234.30.41.21.01.001 Seamaster 300 | 41mm steel, cal. 8912 | 140,000–160,000 † | — |
† These rows are not Bangkok transactions. They are WatchCharts market values or sold listings (January–September 2026 data) converted at 32.5 THB to the dollar. On the Diver 300M, where we have both sides, Bangkok prices sit above the converted US figure, so read the † rows as the bottom of the likely range.
Everything in the table is a clearing price or market value, not a Chrono24 asking price. Asking prices typically run 8–12% above what watches actually sell for.
Which Seamaster, and Why the Prices Differ
Seamaster Diver 300M 210.30 is the Seamaster most people in Thailand know, and after the Speedmaster the Omega that trades most often here. It replaced the 212.30 in 2018 with the 8800 Master Chronometer movement, a ceramic bezel, a laser-engraved ceramic wave dial and the date moved to 6 o'clock. Blue clears about ฿7,000 above black at the median. Omega Thailand's 2026 retail is ฿185,000, so a used one sits about 12% under list.
Planet Ocean 600M is the full-strength diver, rated to 600 metres, thicker and larger than the 300M. In the US it trades slightly below the 300M. WatchCharts logged 30 sales in January 2026, putting it in the top 3% of Omegas by volume, but with a median of 71 days to sell and a 2.8% rise over the year. At 43.5mm it's too big for a lot of Thai wrists, which is why it moves more slowly here than the 300M.
Aqua Terra 150M 220.10 is the dressy Seamaster that works under a shirt cuff, with the teak-deck dial. In Thailand it clears above the Diver 300M because used supply is thinner, and it has held its value better than any other Omega we track. The 41mm sells more often, though the 38mm is gaining with buyers on 15.5–17 cm wrists.
Seamaster 300 (234.30) is the 1957-styled diver with a plain bezel and sandwich dial, relaunched in 2021 with the 8912. WatchCharts shows it trading around 44% under US retail. That makes it one of the best-value Seamasters to buy used, and one of the worst to buy new and sell.
How Seamaster Prices Moved, 2024–2026
Bangkok medians from our index:
| Period | Diver 300M 210.30 | Aqua Terra 220.10 |
|---|---|---|
| December 2024 | ฿165,000 | ฿188,000 |
| June 2025 | ฿164,000 | ฿186,000 |
| June 2026 | ฿162,000 | ฿185,000 |
Both have barely moved in two years. The Diver 300M is about 11% below its June 2022 peak of ฿182,000, and the Aqua Terra about 10% below its ฿205,000 peak. That's steadier than Rolex sports models over the same stretch. Omega never had a waiting list, so there was no premium to melt away.
Seamaster in Thailand — Warranty, Service and Fakes
Thai warranty. Master Chronometer Seamasters carry a 5-year factory warranty. Bangkok buyers pay more for a watch bought from a Thai AD with warranty left. Overseas papers sell fine, just slightly lower. Modern Omega warranty records live in the MyOmega app, so a lost card isn't a serious problem.
Heat, humidity and real diving. Seamasters in Thailand go into the sea far more often than they do in most markets. Before you buy, ask when the watch was last pressure-tested. The bezel should turn one way only with firm clicks, and the 300M's helium valve must be screwed down. We check both on every inspection.
Service. The 8800, 8900 and 8912 are all serviced at Omega's service centre in Bangkok. Keep every service receipt; documented history sells faster.
Fakes we see in Bangkok. The Diver 300M is the most-copied watch in the family. What we always check:
- Wave pattern — genuine dials are laser-engraved with real depth; fakes are often printed and look flat at an angle
- Ceramic dial — genuine dials have a distinctive matte finish, not a glossy coating
- Date position — on the 210.30 the date is at 6; some fakes still use the older layout
- Aqua Terra teak lines — the grooves must be even in depth and run true to the dial's vertical centreline
- Movement through the display back — you should see a Co-Axial calibre with "Geneva waves in arabesque" finishing, not a generic movement with rough decoration
To have Khun Tanapon check your photos before you buy or sell, send them on LINE.
Selling Your Omega Seamaster — Process
Standard Bangkok Omega dealers pay 58–68%, as we explain on Sell Omega in Bangkok, which also carries our current per-reference buy table. Selling to us works like this:
- Send five photos via LINE — dial, caseback, crown and helium valve, warranty card, box
- Receive a price band within 10 minutes — from Khun Tanapon or Khun Pimchanok
- Schedule an at-home or at-condo inspection — we travel to 12 Bangkok districts and check the movement on a timegrapher
- Settlement within 60 minutes — cash or bank transfer
- Receipt and AML/KYC record — every transaction is documented
Get a LINE quote for your Seamaster →
Comparing with other Omegas? See every Omega Speedmaster reference, or the brand overview at Omega Price Guide Thailand. Buying instead? Start at pre-owned Omega in Bangkok.
Data sources:
- Diver 300M and Aqua Terra: Thai Watch Market transaction records January–May 2026 and the WatchCharts index (the same figures as our Seamaster 300M 210.30 and Aqua Terra 220.10 pages)
- WatchCharts Planet Ocean 600M 215.30.44.21.01.001 — sold $3,850–$4,300, January 2026 sales statistics
- WatchCharts Seamaster 300 234.30.41.21.01.001 — market value $4,465–$4,733
- WatchCharts Seamaster Diver 300M 210.30.42.20.03.001 — used as the cross-check against Bangkok data
- Exchange rate used: 32.5 THB per USD
- Omega Thailand retail price documentation, 2026