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Hublot Big Bang Carbon Bezel Baguette 24000€ HT
Top
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
฿1,160,715
Seller
RIVIERAWATCH
47
FR
Rolex Daytona White Gold, 2000(K-Series) Full Diamonds 40MM MINT
Top
Rolex Daytona White Gold, 2000(K-Series) Full Diamonds 40MM MINT
฿826,203
Free shipping
Seller
M.J.WATCHES
45
BE
Panerai RADIOMIR 1940 3 DAYS GMT PAM570 Limited 300 ex
Top
Panerai RADIOMIR 1940 3 DAYS GMT PAM570 Limited 300 ex
฿882,627
Free shipping
Seller
RIVIERAWATCH
47
FR
Sinn 103 St Sa RB Classic Watch Sondermodell
Top
Sinn 103 St Sa RB Classic Watch Sondermodell
฿96,323
Seller
Classic Watch
 
DE
Bremont ALT1-C /Cream (Year 2016)
Top
Bremont ALT1-C /Cream (Year 2016)
฿100,000
Seller
Private seller
TH
Breitling Professional Cockpit B50 Night Mission -20%
Breitling Professional Cockpit B50 Night Mission -20%
฿231,821
Seller
Fliers Juweliers
 
NL
Chopard Superfast Chrono - watch on stock in Zurich
Chopard Superfast Chrono - watch on stock in Zurich
฿284,830
Seller
LUXURY TRADING ZURICH GMBH
 
CH
Oris BC3 Advanced, Day Date
Oris BC3 Advanced, Day Date
฿38,489
Seller
Venus1968.com
28
ES
Hublot 301.AI.460.RX
Top
Hublot 301.AI.460.RX
price on request
Seller
Deluxe ( Asia ) Ltd
 
HK
Rolex GMT II Ceramica art. Rg659
Rolex GMT II Ceramica art. Rg659
฿237,785
Seller
Stroppiana SRL
208
IT
Omega Seamaster Professional 300m Automatic - 41 mm
Omega Seamaster Professional 300m Automatic - 41 mm
฿68,111
Free shipping
Seller
wagener-gold International e.K.
632
DE
Ulysse Nardin - Maxi Marine Chronometer Manufacture - 263-66 -...
Auction
Ulysse Nardin - Maxi Marine Chronometer Manufacture - 263-66 -...
฿72,545
Estimated price
Seller
Catawiki BV
 
Rolex Datejust
Rolex Datejust
฿275,241
Free shipping
Seller
LABELLE JEWELRY
 
US
Omega Seamaster 300 James Bond 007 "SPECTRE" Limited...
Top
Omega Seamaster 300 James Bond 007 "SPECTRE" Limited...
฿279,588
Seller
Private seller
 
CH
Rolex Rare S/S O/P UAE Air Force Pepsi Bezel GMT-Master...
Rolex Rare S/S O/P UAE Air Force Pepsi Bezel GMT-Master...
฿4,317,487
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
60
UK
Breitling Navitimer 01 (46mm) - blacksteel - Export price CHF...
Breitling Navitimer 01 (46mm) - blacksteel - Export price CHF...
฿237,300
Seller
LUXURY TRADING ZURICH GMBH
 
CH
Oris BC3 Advanced, Day Date
Oris BC3 Advanced, Day Date
฿41,915
Seller
Venus1968.com
28
ES
Corum 895-931-06-0371-AN92
Top
Corum 895-931-06-0371-AN92
฿236,649
Seller
Deluxe ( Asia ) Ltd
 
HK
Omega Constellation Ref. 168.004 18k Gold Vintage
Omega Constellation Ref. 168.004 18k Gold Vintage
฿271,884
Seller
Best Deals HD
 
US
Hublot Big Bang Sang Bleu (Limited Edition)
Hublot Big Bang Sang Bleu (Limited Edition)
฿1,467,015
Free shipping
Seller
Istock LTD
22
LV
Omega Seamaster James Bond 007 Limited Edition 212.30.36.20.51...
Omega Seamaster James Bond 007 Limited Edition 212.30.36.20.51...
฿110,832
Seller
Uhren2000 GmbH
206
DE
Rolex Milgauss 116400GV BLUE 40mm JUST SERVICED 3486 NO PAPERS
Rolex Milgauss 116400GV BLUE 40mm JUST SERVICED 3486 NO PAPERS
฿209,533
Seller
Plus Watch - Luxury Watches
2088
IT
Rolex Datejust
Rolex Datejust
฿318,350
Seller
Juwelier Rubin GbR
 
DE
Rolex GMT I zaffiro art. Rg363
Rolex GMT I zaffiro art. Rg363
฿239,800
Seller
Stroppiana SRL
208
IT
Chopard Superfast Chrono - watch on stock in Zurich
Chopard Superfast Chrono - watch on stock in Zurich
฿300,208
Seller
LUXURY TRADING ZURICH GMBH
 
CH
Oris Aquis Depth Gauge
Oris Aquis Depth Gauge
฿92,696
Seller
Venus1968.com
28
ES
Breitling Navitimer Heritage
Top
Breitling Navitimer Heritage
฿109,422
Seller
Private seller
 
RO
Omega Seamaster 300 Spectre Limited Edition
Omega Seamaster 300 Spectre Limited Edition
฿310,330
Seller
Uhrencenter Berlin
177
DE
Rolex GMT Master II 116710 BLNR Edelstahl Keramik Automatik Blau
Rolex GMT Master II 116710 BLNR Edelstahl Keramik Automatik Blau
฿317,988
Seller
Juwelier Rieger
93
DE
Rolex Oyster Perpetual Datejust 41 126334 NEW MODEL
Rolex Oyster Perpetual Datejust 41 126334 NEW MODEL
฿292,194
Seller
Filipucci Juweliers
263
NL
Omega Seamaster 300 Master Co-Axial Liquidmetal 2016 3647
Omega Seamaster 300 Master Co-Axial Liquidmetal 2016 3647
฿153,110
Seller
Plus Watch - Luxury Watches
2088
IT
Rolex Datejust II - 116334 - Blue Dial
Rolex Datejust II - 116334 - Blue Dial
฿233,352
Free shipping
Seller
wagener-gold International e.K.
632
DE
Rolex DATEJUST EDELSTAHL / 18K GOLD GELBGOLD SERVICE 09/2016
Rolex DATEJUST EDELSTAHL / 18K GOLD GELBGOLD SERVICE 09/2016
฿160,807
Free shipping
Seller
Timeless Watches GmbH
86
DE
Rolex Gmt Master  Ref:16700 Stainless Steel Blue Red Pepsi...
Rolex Gmt Master Ref:16700 Stainless Steel Blue Red Pepsi...
฿290,177
Seller
La Jolla Jewelry and Collateral Loan Company
8
US
Rolex Explorer II
Rolex Explorer II
฿1,007,565
Seller
2GTime
 
CH
F.P.Journe Resonance Brass Movement Platinum 38mm
F.P.Journe Resonance Brass Movement Platinum 38mm
฿1,545,206
Free shipping
Seller
A Collected Man
5
UK
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (1997)
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (1997)
฿265,997
Seller
Kleen Edelmetalen
109
NL
Omega Seamaster Aqua Terra 15,000 Gauss
Omega Seamaster Aqua Terra 15,000 Gauss
฿132,958
Seller
Uhrencenter Berlin
177
DE
Rolex Explorer II scat/gar art. Re352
Rolex Explorer II scat/gar art. Re352
฿169,271
Seller
Stroppiana SRL
208
IT
Rolex Oyster Perpetual Day-Date 18K YG 18038
Rolex Oyster Perpetual Day-Date 18K YG 18038
฿402,758
Seller
Phigora
62
US
Omega Seamaster Professional Chronometer Medium-Size
Top
Omega Seamaster Professional Chronometer Medium-Size
฿48,363
Seller
Private seller
 
DE
Omega Aqua Terra 150M Co-Axial Master Chronometer 41mm G
Omega Aqua Terra 150M Co-Axial Master Chronometer 41mm G
฿153,110
Seller
Plus Watch - Luxury Watches
2088
IT
Rolex - Submariner - 16610 - Men - 1990-1999
Auction
Rolex - Submariner - 16610 - Men - 1990-1999
฿193,453
Estimated price
Seller
Catawiki BV
 
Omega Seamaster Professional Diver 300M
Omega Seamaster Professional Diver 300M
฿66,096
Seller
Juwelier Burger, since 2001
406
NL
Rolex 116710LN   GMT Master II Black Index Dial
Rolex 116710LN GMT Master II Black Index Dial
฿274,513
Seller
K&S Watch & Jewellery
10
HK
Breitling Chronomat GT Pilot Gold Steel 39 mm (Full Set)
Breitling Chronomat GT Pilot Gold Steel 39 mm (Full Set)
฿157,180
Seller
Kleen Edelmetalen
109
NL
Omega Seamaster Aqua Terra Railmaster
Omega Seamaster Aqua Terra Railmaster
฿103,981
Seller
Uhrencenter Berlin
177
DE
Rolex Date zaffiro art. Rd358nl
Rolex Date zaffiro art. Rd358nl
฿112,847
Seller
Stroppiana SRL
208
IT
Rolex Datejust 41 Edelstahl Weißgold 126334 Schwarz Jubile
Rolex Datejust 41 Edelstahl Weißgold 126334 Schwarz Jubile
฿312,345
Seller
Uhren2000 GmbH
206
DE
Breitling Mulliner Tourbillon Rose Gold Manual - H18841TA/G602
Breitling Mulliner Tourbillon Rose Gold Manual - H18841TA/G602
฿3,408,542
Seller
H&Y Jewellery
12
UK
Rolex Yacht Master Men's Watch Platinum 116622 3683
Rolex Yacht Master Men's Watch Platinum 116622 3683
฿342,532
Seller
Plus Watch - Luxury Watches
2088
IT
Rolex S/S Rare Mark I Dial Flat 4 Green Bezel Submariner 16610LV
Rolex S/S Rare Mark I Dial Flat 4 Green Bezel Submariner 16610LV
฿431,749
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
60
UK
Rolex Daytona
Rolex Daytona
฿407,056
Seller
Juwelier Burger, since 2001
406
NL
Franck Muller Vanguard Iced Out Diamonds Full Pave Dial
Franck Muller Vanguard Iced Out Diamonds Full Pave Dial
฿659,754
Seller
LUXUS RITTER GmbH & Co. KG
46
DE
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (Full Set)
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (Full Set)
฿278,088
Seller
Kleen Edelmetalen
109
NL
Rolex Oyster Perpetual Datejust
Rolex Oyster Perpetual Datejust
฿233,283
Seller
WatchUWant.com
49
US
Omega Speedmaster Automatic Date Datum Chronograph Chronometer
Omega Speedmaster Automatic Date Datum Chronograph Chronometer
฿72,142
Seller
Uhrenmarkt München
20
DE
Zenith El Primero  De Luca
Zenith El Primero De Luca
฿140,656
Free shipping
Seller
Joaillerie Royale
202
BE
TAG Heuer Grand Carrera Automatik Chronograph
TAG Heuer Grand Carrera Automatik Chronograph
฿226,098
Seller
Prestige Luxusuhren GmbH
2257
DE
Omega Seamaster Planet Ocean Co-Axial  42 MM 3675
Omega Seamaster Planet Ocean Co-Axial 42 MM 3675
฿132,958
Seller
Plus Watch - Luxury Watches
2088
IT
Rolex Seadweller SCAT/GAR art. Rb1172
Rolex Seadweller SCAT/GAR art. Rb1172
฿231,740
Seller
Stroppiana SRL
208
IT

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.