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40,697 listings including promoted listings
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Promoted
Rolex Sea-Dweller
ref 16660 - Very Rare Dial MK 3 Missing Hyphen & Cracked Spider - Full Service
฿1,593,752
+ ฿9,124 for shipping
Promoted
Rolex Datejust 41
NEW 2023 Mint Green Stick Dial Fluted Bezel - Stainless Steel Jubilee Bracelet
฿587,591
+ ฿9,000 for shipping
Promoted
Rolex Datejust 41
NEW 2023 Blue Index Stick Dial Fluted Bezel Stainless Steel Jubilee Bracelet
฿550,855
+ ฿9,000 for shipping
Omega Seamaster Diver 300 M
2551.80.00
฿76,043
Excl. shipping
Private Seller
Omega Seamaster Planet Ocean
215.30.44.21.01.001
฿145,000
Excl. shipping
Private Seller
Promoted
Rolex Datejust 41
Grey Slate Wimbledon Green Roman Dial Oyster Bracelet 126334
฿532,671
+ ฿3,637 for shipping
Promoted
Rolex Submariner Date
41mm NEW/UNWORN
฿531,532
+ ฿16,531 for shipping
Popular
Rolex Submariner (No Date)
01/2023 - LC100 - Neu / Ungetragen - Fullset
฿498,048
+ ฿2,191 for shipping
Popular
Rolex GMT-Master II
Ref.126720VTNR Sprite Eu 2023 ungetragen unworn
฿776,556
+ ฿7,969 for shipping
Popular
Tudor Black Bay Fifty-Eight
79030N Fullset aus 2022
฿139,055
+ ฿23,866 for shipping
Popular
Rolex Datejust 41
126334 'Mint Green' - 2023 Box & Papers
฿544,702
+ ฿3,212 for shipping
Rolex Submariner (No Date)
124060 12/2023
฿495,657
+ ฿11,953 for shipping
Promoted
Audemars Piguet Royal Oak Offshore Chronograph
42 Ref. 26480TI Titanium Blue Dial Watch Like New 2022 Original Invoice
฿1,271,017
+ ฿11,913 for shipping
Omega Speedmaster Professional Moonwatch Moonphase
304.93.44.52.03.002
฿387,000
Excl. shipping
Private Seller
Promoted
Rolex Datejust 41
Grey Slate Wimbledon Green Roman Dial Oyster Bracelet 126334
฿538,182
+ ฿3,637 for shipping
Rolex GMT-Master II
Sprite Oyster 126720VTNR
฿778,199
+ ฿11,972 for shipping
Popular
Rolex Submariner (No Date)
12/2020 - LC100 - Wie Neu - Fullset inkl. Erstkaufrechnung
฿458,204
+ ฿2,191 for shipping
Popular
Omega Seamaster Diver 300 M
– Like New – Schwarz – Box & Papiere
฿178,899
+ ฿9,961 for shipping
Popular
Rolex Submariner Date
New 2023
฿553,829
+ ฿39,804 for shipping
Popular
Tudor Black Bay GMT
M79830RB-0001
฿170,930
+ ฿3,546 for shipping
Popular
Rolex Submariner (No Date)
2023 Unworn
฿513,985
+ ฿9,961 for shipping
Popular
Omega Speedmaster Professional Moonwatch
Co-Axial Master Chronometer
฿278,907
+ ฿4,582 for shipping
Popular
Omega Speedmaster Professional Moonwatch
Apollo 11 50th
฿411,427
+ ฿5,140 for shipping
Promoted
Rolex Submariner Date
41mm Stainless Steel Black Dial - Ceramic Bezel (126610LN)
฿567,203
+ ฿3,637 for shipping
Popular
Rolex Submariner (No Date)
124060 New 2023
฿496,055
+ ฿11,913 for shipping
Popular
Rolex Submariner Date
02/2024 - LC100 - Neu / ungetragen - Fullset
฿567,774
+ ฿2,191 for shipping
Rolex GMT-Master II
Sprite 8/2022 Box&Papers Like new
฿725,117
+ ฿79,688 for shipping
Popular
Rolex GMT-Master II
New 2023
฿748,665
+ ฿39,804 for shipping
Wempe
Zeitmesser Chronograph Mondphase mit Vollkalender
฿119,133
+ ฿3,546 for shipping
Rolex Sea-Dweller
Single Red 2018 Full Set
฿478,126
+ ฿3,546 for shipping

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Rolex Submariner Date
FullSet / 09.2021 / Lc: EU
฿508,008
+ ฿17,930 for shipping
Rolex GMT-Master II
126720vtnr Sprite Left Handed _ Full Set From 01/2024 _ New
฿753,048
+ ฿7,132 for shipping
Promoted
Rolex Submariner (No Date)
Black Dial No Date 124060
฿495,494
+ ฿3,637 for shipping
Rolex Submariner (No Date)
124060 NEW 2023
฿502,032
+ ฿19,125 for shipping
Rolex Sea-Dweller
Single Red - 2019 - LC100 - Wie Neu - Fullset
฿515,977
+ ฿2,191 for shipping
Popular
Omega Speedmaster Professional Moonwatch
3861 Hesalite 310.30.42.50.01.001
฿209,211
+ ฿6,061 for shipping
Rolex Oyster Perpetual Date
Ref: 15200
฿215,117
+ ฿3,984 for shipping
Popular
Omega Seamaster 300
233.30.41.21.01.001
฿206,789
+ ฿3,546 for shipping
Popular
Rolex Datejust 41
Mint Green Dial
฿585,704
+ ฿11,953 for shipping
Popular
Omega Globemaster
Constellation Globemaster
฿146,864
+ ฿5,140 for shipping
Rolex Datejust 41
126334 Rhodium _ Full Set From 07/2017 _ Like New
฿470,157
+ ฿7,132 for shipping
Promoted
Rolex Submariner Date
41mm Stainless Steel Black Dial - Ceramic Bezel (126610LN)
฿569,407
+ ฿3,637 for shipping
Popular
Rolex Datejust 41
Mint Green Dial - 126334 - 2023
฿551,686
+ ฿4,656 for shipping
Rolex Datejust 41
Schwarz - 11/2021 - LC100 - Neu / Ungetragen - Fullset inkl. Erstkaufrechnung
฿527,930
+ ฿2,191 for shipping
Popular
Omega Seamaster Diver 300 M
210.30.42.20.03.001
฿147,422
+ ฿3,945 for shipping
Popular
Omega Seamaster Diver 300 M
36mm 25518000 With Papers
฿113,555
+ ฿5,937 for shipping
Seiko King
5245-7000 Chronometer Special. The extreamly rare model in very beautiful condition.
฿55,000
Free shipping
Rolex GMT-Master II
New 2022 full stickers
฿784,883
+ ฿39,804 for shipping
Popular
Omega Seamaster Diver 300 M
Limited 50 years of 007 James Bond
฿161,367
+ ฿5,140 for shipping
Popular
Omega Seamaster 300
Ref. 233.30.41.21.01.001 - Fullset from 2015
฿178,899
+ ฿3,984 for shipping
Promoted
Rolex Datejust 41
Stainless Steel & White Gold - Black Index Dial - Fluted Bezel 126334
฿514,303
+ ฿3,637 for shipping
Popular
Omega Seamaster Planet Ocean
600M Summer Edition Diver Blue 2023 Bracelet
฿267,989
+ ฿7,310 for shipping
Popular
Tudor Black Bay 54
Rubber 79000N Unworn Full Set 2023 M79000N-0002
฿153,399
Free shipping
Rolex Sea-Dweller 4000
"Mint Condition" Zertifikat
฿354,610
+ ฿3,546 for shipping
Rolex Submariner Date
2023 | Unworn | Full Set
฿547,030
+ ฿3,945 for shipping
Popular
Rolex Submariner Date
126610LN Unworn Full Set 2023
฿513,568
+ ฿5,510 for shipping
Popular
Breitling Navitimer 1 B01 Chronograph
46mm Chronograph AB0127211B1A1
฿249,024
+ ฿7,969 for shipping
Popular
Rolex Datejust 41
Wimbledon
฿517,969
+ ฿4,343 for shipping
Rolex Datejust 41
In Stock 2023 Datejust 41 Rhodium Index Dial 126334 Jubilee Bracelet
฿506,772
+ ฿6,429 for shipping
Promoted
Rolex Datejust 41
18k White Gold and Steel Blue Index Dial Jubilee 126334
฿583,661
+ ฿3,637 for shipping
Rolex Submariner (No Date)
124060
฿506,016
+ ฿11,953 for shipping
Rolex Submariner Date
126610LN
฿629,532
+ ฿9,961 for shipping
Popular
Rolex Datejust 41
# Ref 126334 # 2020 # Fullset
฿430,313
+ ฿19,922 for shipping

Chronometer - Certified Precision

"Chronometer" may sound like a fancy name for a normal watch - after all, it just comes from the Greek words for "time" and "measure" - but chronometers are really something quite special. Chronometers are watches, yes, but watches that have been tried and tested and certified to meet exacting precision standards. The COSC in Switzerland determines which watches may actually call themselves "chronometers".


The Oceanic Origins of Chronometers

Though the Swiss set the standard, the English coined the word. In the quest to calculate the longitude, the Englishman Jeremy Thacker, a clockmaker of extraordinary skill, created a series of increasingly accurate clocks, well beyond what had had previously been achieved. The clocks were intended to be used aboard ships and had to keep absolutely accurate time in order to allow for calculating longitude precisely, and thus fixing the position of the ship in the vast ocean. The last of Thacker's chronometers was actually more like a very large pocket watch.

Other clockmakers - and increasingly watchmakers - copied from and improved upon Thacker's final chronometer, producing watches of greater and greater precision. The original standards for accuracy were actually far more exacting than those currently maintained by the COSC in Switzerland, so very few watches were certified as chronometers and thus very few were actually produced and sold. The original chronometer requirements for mechanical watches are no longer necessary, since digital watches can already exceed them, but chronometers are still manufactured and sold (and resold) today as examples of extremely fine precision engineering. The use of jewels and precious metals in watches owes its origins to chronometers - these materials were used to make the mechanical movements as precise as possible.


Officially Certified Chronometers

Chronometers are no longer rare. More than a million Officially Certified Chronometer certificates are issued each year. Those watches that pass the most rigorous of the COSG's tests are rewarded with a special serial number and, indeed, the right to call themselves "chronometers" at all. Chronometers must meet several requirements: they must display the seconds; they must be highly precise; they must demonstrate that precision over the course of several consecutive days of testing; they must perform precisely in different positions and at different temperatures.


Chronometers in Everyday Use

This may sound extreme, but such reliability was crucial for individuals and groups that had to rely on the precision of portable mechanical timekeepers in the past. Pilots watches, for instance, needed to perform as chronometers (and those that did not had to be hackable). The famous B-Uhren, commissioned by the German Luftwaffe and manufactured by several companies, were chronometer-certified pilots watches - or chronometers that were used as pilots watches, depending on your perspective. Interestingly, despite the many years between Thacker's invention and the production of the B-Uhren, chronometers were still tightly bound to use in navigation.

First at sea, then in the air. And, still today, at sea again - or at least under it. Some diving watches, like the Rolex submariner, are also certified chronometers. Divers must be able to reliably track how long they've been under and how much time they have to surface.

Though their accuracy may have been eclipsed by digital watches, chronometers are still useful today.