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Ulysse Nardin Perpetual Manufacture
TOP
Ulysse Nardin Perpetual Manufacture
฿905,923
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LUXE WARE (HK) LIMITED
54
HK
Rolex GMT-Master II 116758SARU
TOP
Rolex GMT-Master II 116758SARU
฿2,247,146
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MMC RIVIERA
6
MC
Rolex LADY DATEJUST 18K GOLD DIAMANT AUTOMATIK SERVICE 11/2016
TOP
Rolex LADY DATEJUST 18K GOLD DIAMANT AUTOMATIK SERVICE 11/2016
฿173,070
Seller
Timeless Watches GmbH
198
DE
Hublot King Power F1 India,  Ltd Edition, Box & Papers
TOP
Hublot King Power F1 India, Ltd Edition, Box & Papers
฿735,116
Seller
Tempvs Ltd
102
UK
Rolex Day-Date President Pink MOP Roman  Diamond Dial Bezel 18038
TOP
Rolex Day-Date President Pink MOP Roman Diamond Dial Bezel 18038
฿507,872
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Watch My Diamonds
111
US
Omega Seamaster Planet Ocean CO-AXIAL 45.5 MM
Omega Seamaster Planet Ocean CO-AXIAL 45.5 MM
฿164,647
Seller
Private Seller
TH
Corum Two Tone Admiral Cup Triple Calendar Chronograph 18Kt/ SS
TOP
Corum Two Tone Admiral Cup Triple Calendar Chronograph 18Kt/ SS
฿135,441
Free shipping
Seller
Ye Olde Timekeepers, Inc.
14
US
Bulgari Diagono Scuba Automatic Chronograph 18K Gold  SC38G...
TOP
Bulgari Diagono Scuba Automatic Chronograph 18K Gold SC38G...
฿226,686
Free shipping
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Pawndeluxe
114
NL
Louis Moinet Memoris Red Eclipse
Straight from the manufacturer
Louis Moinet Memoris Red Eclipse
฿3,705,227
BrandBoutique Member
Louis Moinet
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
฿96,588
Seller
Classic Watch
18
DE
Omega Seamaster Co-Axial Skyfall 007
Omega Seamaster Co-Axial Skyfall 007
฿216,830
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
192
DE
B.R.M CT-48-AR
TOP
B.R.M CT-48-AR
฿591,354
Free shipping
Seller
Solexport International
MU
Omega Speedmaster Apollo 11 Pro von 2005, Limited Edition,...
Omega Speedmaster Apollo 11 Pro von 2005, Limited Edition,...
฿354,418
Free shipping
Seller
chronopark GmbH
 
DE
Ulysse Nardin Classico San Marco
TOP
Ulysse Nardin Classico San Marco
฿165,916
Seller
Premium Lombard
RU
Rolex 2012 ENGRAVED UNPOLISHED Rolex Submariner 4-Line 40mm...
Rolex 2012 ENGRAVED UNPOLISHED Rolex Submariner 4-Line 40mm...
฿233,399
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Collectors Coins of Lynbrook LLC
 
US
Rolex Yacht-Master 116622 Full Set
Rolex Yacht-Master 116622 Full Set
฿330,764
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Henry´s Auktionshaus AG
DE
Hublot Big Bang Unico Red Sapphire (Limited Edition)
Hublot Big Bang Unico Red Sapphire (Limited Edition)
฿1,770,120
Free shipping
Seller
Istock LTD
88
LV
Louis Moinet Memoris
Straight from the manufacturer
Louis Moinet Memoris
฿1,848,908
BrandBoutique Member
Louis Moinet
Sinn 103 ST
TOP
Sinn 103 ST
฿67,809
Seller
Classic Watch
18
DE
Omega Seamaster Co Axial Chronometer
Omega Seamaster Co Axial Chronometer
฿110,386
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
192
DE
B.R.M V8-44-GULF
TOP
B.R.M V8-44-GULF
฿272,023
Free shipping
Seller
Solexport International
MU
Omega 42mm Seamaster Planet Ocean Chronometer von 2016,...
Omega 42mm Seamaster Planet Ocean Chronometer von 2016,...
฿137,588
Free shipping
Seller
chronopark GmbH
 
DE
Rolex Submariner Date
Rolex Submariner Date
฿227,378
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Uhrmageren.com
9
DK
Rolex Vintage 1963 Rolex DateJust 1603 36mm Stainless Steel...
Rolex Vintage 1963 Rolex DateJust 1603 36mm Stainless Steel...
฿84,380
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Collectors Coins of Lynbrook LLC
 
US
Omega Speedmaster Broad Arrow 3551500
Omega Speedmaster Broad Arrow 3551500
฿92,882
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Henry´s Auktionshaus AG
DE
Hublot Classic Fusion Automatic 38mm Rose Gold
Hublot Classic Fusion Automatic 38mm Rose Gold
฿500,680
Free shipping
Seller
Istock LTD
88
LV
Louis Moinet Memoris 200th Anniversary
Straight from the manufacturer
Louis Moinet Memoris 200th Anniversary
฿2,324,188
BrandBoutique Member
Louis Moinet
Chopard L.U.C. Tonneau
Chopard L.U.C. Tonneau
฿367,154
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Chronometrie Beyer AG
 
CH
Ulysse Nardin Chrono Marine
Ulysse Nardin Chrono Marine
฿108,415
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
192
DE
B.R.M DDF-12-44-SQ-AJ
TOP
B.R.M DDF-12-44-SQ-AJ
฿469,141
Free shipping
Seller
Solexport International
MU
Breitling Windrider Cockpit 41 UTC Big Date 18k Rosègold / Stahl
Breitling Windrider Cockpit 41 UTC Big Date 18k Rosègold / Stahl
฿157,300
Free shipping
Seller
chronopark GmbH
 
DE
Rolex Datejust 41 126334 18K White Gold Bezel Jubilee Bracelet...
Rolex Datejust 41 126334 18K White Gold Bezel Jubilee Bracelet...
฿291,199
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Carter's Diamonds
 
US
Rolex Submariner Date 16613 Luminova Two-Tone 18K Gold Black...
Rolex Submariner Date 16613 Luminova Two-Tone 18K Gold Black...
฿243,558
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Collectors Coins of Lynbrook LLC
 
US
Rolex Pearlmaster Diamonds Reference 69308
Rolex Pearlmaster Diamonds Reference 69308
฿705,683
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Henry´s Auktionshaus AG
DE
Hublot Big Bang Unico Ferrari Carbon (Limited Edition)
Hublot Big Bang Unico Ferrari Carbon (Limited Edition)
฿823,954
Free shipping
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Istock LTD
88
LV
Bremont Watch Martin Baker MBI
Bremont Watch Martin Baker MBI
฿1,225,194
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Watchfinder.co.uk Ltd
UK
Breitling Avenger II Seawolf Limited Edition Cobra Yellow Dial
Breitling Avenger II Seawolf Limited Edition Cobra Yellow Dial
฿116,300
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AP Watches
 
ES
Omega Seamaster Co Axial Aqua Terra
Omega Seamaster Co Axial Aqua Terra
฿124,184
Free shipping
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A. Grimmeissen Uhren An- und Verkauf
192
DE
Rolex Date Chronometer Ref. 15000 von 1986
Rolex Date Chronometer Ref. 15000 von 1986
฿106,050
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Matthias Wohne Uhrmachermeister
6
DE
Omega 41,5mm Seamaster Aqua Terra 150M Master Co-Axial, B&P,...
Omega 41,5mm Seamaster Aqua Terra 150M Master Co-Axial, B&P,...
฿188,839
Free shipping
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chronopark GmbH
 
DE
Omega Seamaster Diver 300 M
Omega Seamaster Diver 300 M
฿72,934
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Watch & Bullion
12
GI
Omega Seamaster Professional 300M 2541.80 Blue Wave Quartz...
Omega Seamaster Professional 300M 2541.80 Blue Wave Quartz...
฿77,642
Seller
Collectors Coins of Lynbrook LLC
 
US
Rolex Datejust Medium
Rolex Datejust Medium
฿117,877
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Henry´s Auktionshaus AG
DE
Omega Seamaster Planet Ocean Co-Axial 600m
Omega Seamaster Planet Ocean Co-Axial 600m
฿579,527
Free shipping
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Istock LTD
88
LV
TAG Heuer Watch Grand Carrera CAV5185.FT6020
TAG Heuer Watch Grand Carrera CAV5185.FT6020
฿162,617
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Watchfinder.co.uk Ltd
UK
Rolex Oysterquartz 19018 Day Date President 18K Gold Watch...
Rolex Oysterquartz 19018 Day Date President 18K Gold Watch...
฿358,750
Seller
Carter's Diamonds
 
US
Omega Constellation Herrenuhr Double Eagle
Omega Constellation Herrenuhr Double Eagle
฿67,020
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
192
DE
Breitling Chronomat 44
Breitling Chronomat 44
฿248,960
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Hulpiau A
 
BE
Omega 41,5mm Speedmaster '57 Co-Axial Chronograph, B&P, Ref....
Omega 41,5mm Speedmaster '57 Co-Axial Chronograph, B&P, Ref....
฿180,954
Free shipping
Seller
chronopark GmbH
 
DE
Omega Seamaster Diver 300 M 41 mm – 212.30.41.20.03.001
Omega Seamaster Diver 300 M 41 mm – 212.30.41.20.03.001
฿94,617
Seller
Mall of the Watch
687
MC
Breitling 2015 Breitling Navitimer World GMT Stainless 46mm...
Breitling 2015 Breitling Navitimer World GMT Stainless 46mm...
฿135,238
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Collectors Coins of Lynbrook LLC
 
US
Rolex Oyster Perpetual Medium Ref. 67488
Rolex Oyster Perpetual Medium Ref. 67488
฿334,706
Seller
Henry´s Auktionshaus AG
DE
Hublot Big Bang Pop Art King Gold Apple (Limited Edition)
Hublot Big Bang Pop Art King Gold Apple (Limited Edition)
฿776,645
Free shipping
Seller
Istock LTD
88
LV
Oris Artix GT Calobra Chronograph Limited Edition
Oris Artix GT Calobra Chronograph Limited Edition
฿100,530
Seller
AP Watches
 
ES
Omega Seamaster America's Cup
Omega Seamaster America's Cup
฿86,732
Seller
COMPRA-VENTA JAVIER CALVO
ES
Rolex GMT Master II
Rolex GMT Master II
฿392,265
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
192
DE
Edox Limited Edition Miss GEICO Racing Chronoffshore-One
Edox Limited Edition Miss GEICO Racing Chronoffshore-One
฿33,691
Free shipping
Seller
Time Machine Plus
 
US
Omega Speedmaster 38 Co-Axial Stahl/Roségold Chronograph, B&P
Omega Speedmaster 38 Co-Axial Stahl/Roségold Chronograph, B&P
฿149,416
Free shipping
Seller
chronopark GmbH
 
DE
Breitling Superocean 42mm – A17365d1/c915/148s
Breitling Superocean 42mm – A17365d1/c915/148s
฿82,790
Seller
Mall of the Watch
687
MC
Breitling Old Navitimer Chronograph Black 42mm Automatic 81610...
Breitling Old Navitimer Chronograph Black 42mm Automatic 81610...
฿118,274
Seller
Collectors Coins of Lynbrook LLC
 
US
Breitling Exospace B55 Night Mission Ref. VB5510H2/BE45
Breitling Exospace B55 Night Mission Ref. VB5510H2/BE45
฿216,436
Seller
Henry´s Auktionshaus AG
DE
Glashütte Original PanoMaticLunar Steel Bracelet
Glashütte Original PanoMaticLunar Steel Bracelet
฿331,158
Free shipping
Seller
Istock LTD
88
LV
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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.

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