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Hermès Clipper XL Automatic - Box & inhouse certificate
TOP
Hermès Clipper XL Automatic - Box & inhouse certificate
AED 10,967
Free shipping
Seller
Pawndeluxe
187
NL
Rolex Vintage Turn-O-Graph 6202 mit Box und Papieren aus 1955
TOP
Rolex Vintage Turn-O-Graph 6202 mit Box und Papieren aus 1955
AED 141,886
Seller
TimeElements
31
DE
Rolex Day-Date 40 18 kt Weißgold Schwarz DIA 228239
TOP
Rolex Day-Date 40 18 kt Weißgold Schwarz DIA 228239
AED 139,090
Seller
Uhren2000 GmbH
363
DE
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
TOP
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
AED 275,256
Seller
MMC RIVIERA
6
MC
Rolex Daytona 16520
Rolex Daytona 16520
Price on request
Seller
GoldenTimeCo
AE
Omega Speedmaster Racing
TOP
Omega Speedmaster Racing
AED 9,900
Seller
Private Seller
 
AE
Omega CONSTELLATION OMEGA CO-AXIAL 38 MM ROSE GOLD
TOP
Omega CONSTELLATION OMEGA CO-AXIAL 38 MM ROSE GOLD
AED 46,531
Seller
Plus Watch - Luxury Watches
2985
IT
Gérald Genta Arena Sport Retro SSPL10 Men's Watch - Papers
TOP
Gérald Genta Arena Sport Retro SSPL10 Men's Watch - Papers
AED 11,182
Free shipping
Seller
Pawndeluxe
187
NL
Breitling Chronomat 41mm SOLID 18KT GOLD Diamonds
Breitling Chronomat 41mm SOLID 18KT GOLD Diamonds
AED 89,524
Free shipping
Seller
European Jewellery
11
AE
Paul Picot Technicum Rattrapante Chrono Ref. 4101 Year 2005...
Paul Picot Technicum Rattrapante Chrono Ref. 4101 Year 2005...
AED 30,401
Free shipping
Seller
Aix Tempora LLC – Momentum Dubai
AE
Breitling Chronoliner
Breitling Chronoliner
AED 15,667
Seller
Royal watches
39
AE
Omega Seamaster Aqua Terra [FREE WORLDWIDE SHIPPING]
Omega Seamaster Aqua Terra [FREE WORLDWIDE SHIPPING]
AED 13,988
Seller
Private Seller
 
AE
Rolex Sea-Dweller
Rolex Sea-Dweller
AED 52,036
Seller
Private Seller
AE
Rolex GMT-Master II
Rolex GMT-Master II
AED 74,018
Seller
GoldenTimeCo
AE
Chopard L.U.C
Chopard L.U.C
AED 16,000
Seller
Private Seller
AE
Chopard Mille Miglia Gran Turismo XL - Limited Edition Box &...
TOP
Chopard Mille Miglia Gran Turismo XL - Limited Edition Box &...
AED 14,623
Free shipping
Seller
Pawndeluxe
187
NL
Chopard Mille Miglia Gran Turismo GT GMT XL STEEL Automatic
Chopard Mille Miglia Gran Turismo GT GMT XL STEEL Automatic
AED 13,056
Free shipping
Seller
European Jewellery
11
AE
Chopard Mille Miglia
Chopard Mille Miglia
AED 16,000
Seller
Private Seller
 
AE
Rolex GMT-Master II 116758SARU
Rolex GMT-Master II 116758SARU
AED 562,398
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
235
UK
Breitling Superocean II 44
Breitling Superocean II 44
AED 9,325
Seller
Royal watches
39
AE
Bomberg 1968 -Limited Edition- Bullhead Chronograph
Bomberg 1968 -Limited Edition- Bullhead Chronograph
AED 2,499
Seller
Private Seller
 
AE
Rolex Datejust
Rolex Datejust
AED 33,385
Seller
Private Seller
 
AE
Omega Seamaster 300 Master Co-Axial in Titanium
Omega Seamaster 300 Master Co-Axial in Titanium
AED 25,000
Seller
Private Seller
 
AE
Omega De Ville Prestige
Omega De Ville Prestige
AED 7,833
Seller
Private Seller
 
AE
Rolex Day-Date
Rolex Day-Date
AED 51,476
Seller
GoldenTimeCo
AE
Omega Constellation Double Eagle STEEL 2015 Automatic
Omega Constellation Double Eagle STEEL 2015 Automatic
AED 14,361
Free shipping
Seller
European Jewellery
11
AE
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
AED 10,537
Seller
Classic Watch
22
DE
Rolex GMT-Master Vintage UAE Air Force 1675
Rolex GMT-Master Vintage UAE Air Force 1675
AED 464,590
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
235
UK
Breitling for Bentley
Breitling for Bentley
AED 20,702
Seller
Royal watches
39
AE
Breitling Bentley Supersport
Breitling Bentley Supersport
AED 18,924
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
284
DE
Louis Moinet Mecanograph
Louis Moinet Mecanograph
AED 37,302
Seller
Haute Horologe
AE
Breitling Galactic 36 Automatic Steel & Rose Gold
Breitling Galactic 36 Automatic Steel & Rose Gold
AED 16,786
Seller
King Jewelers
 
US
Ulysse Nardin GMT +/- Perpetual 42mm rose gold
Ulysse Nardin GMT +/- Perpetual 42mm rose gold
AED 75,983
Seller
Luxury Souq Dubai
 
AE
F.P.Journe Chronometre A Resonance
F.P.Journe Chronometre A Resonance
AED 197,699
Seller
GoldenTimeCo
AE
Breitling Chronomat 44mm 2014 Flying Fish Automatic  AB011010/...
Breitling Chronomat 44mm 2014 Flying Fish Automatic AB011010/...
AED 16,413
Free shipping
Seller
European Jewellery
11
AE
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
AED 24,472
Free shipping
Seller
SORELLE RONCO
766
IT
Rolex Deepsea Sea-Dweller 116660
Rolex Deepsea Sea-Dweller 116660
AED 59,908
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
235
UK
Omega Seamaster Aqua Terra
Omega Seamaster Aqua Terra
AED 14,921
Seller
Royal watches
39
AE
Rolex Daydate
Rolex Daydate
AED 56,987
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
284
DE
Bulgari Carbon Gold
Bulgari Carbon Gold
AED 8,602
Seller
MEGA WATCHES
9
IT
Breitling Galactic Blue Dial 41mm Steel
Breitling Galactic Blue Dial 41mm Steel
AED 13,500
Seller
Timepiece360
AE
Rolex Submariner Date
Rolex Submariner Date
AED 24,789
Seller
Uhrmageren.com
11
DK
Chopard Grand Prix de Monaco Historique
Chopard Grand Prix de Monaco Historique
AED 16,786
Seller
Luxury Souq Dubai
 
AE
Breitling Bentley 6.75 Chronograph Automatic 2009
Breitling Bentley 6.75 Chronograph Automatic 2009
AED 16,413
Free shipping
Seller
European Jewellery
11
AE
Omega Seamaster AQUA TERRA Co-Axial Master Chronometer.Steel
Omega Seamaster AQUA TERRA Co-Axial Master Chronometer.Steel
AED 16,988
Free shipping
Seller
SORELLE RONCO
766
IT
Rolex Submariner Date Steel Green Bezel
Rolex Submariner Date Steel Green Bezel
AED 68,221
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
235
UK
Breitling Avenger Hurricane
Breitling Avenger Hurricane
AED 16,786
Seller
Royal watches
39
AE
Rolex Yacht Master Damenuhr
Rolex Yacht Master Damenuhr
AED 38,708
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
284
DE
Rolex Datejust 41mm Slate Oyster 2018 verklebt
Rolex Datejust 41mm Slate Oyster 2018 verklebt
AED 35,482
Seller
LUXUS-PORT
52
DE
Rolex 16700 16700 GMT Master Red / Blue Pepsi Bezel (29479)
Rolex 16700 16700 GMT Master Red / Blue Pepsi Bezel (29479)
AED 40,659
Seller
European Watch Company
169
US
Omega Constellation Chronometer 38mm Steel & Rose Gold
Omega Constellation Chronometer 38mm Steel & Rose Gold
AED 23,100
Seller
Timepiece360
AE
Chopard Mille Miglia
Chopard Mille Miglia
AED 14,361
Seller
Luxury Souq Dubai
 
AE
Rolex Sea-Dweller 4000, Ref. 116600, Full Set, LC100
Rolex Sea-Dweller 4000, Ref. 116600, Full Set, LC100
AED 45,546
Seller
time4watches GmbH
23
DE
Breitling Superocean 44 Special Total Blue Ocean Racer II Rubber
Breitling Superocean 44 Special Total Blue Ocean Racer II Rubber
AED 11,655
Free shipping
Seller
SORELLE RONCO
766
IT
Rolex Rare Date Automatic Steel 1530
Rolex Rare Date Automatic Steel 1530
AED 36,678
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
235
UK
Breitling Superocean II 42
Breitling Superocean II 42
AED 9,698
Seller
Royal watches
39
AE
Rolex Submariner
Rolex Submariner
AED 76,771
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
284
DE
Breitling Navitimer World aus 2016 , Full Set, MINT Condition
Breitling Navitimer World aus 2016 , Full Set, MINT Condition
AED 17,204
Seller
LUXUS-PORT
52
DE
Omega 233.32.41.21.01.001 Omega Seamaster 300M Limited Edition...
Omega 233.32.41.21.01.001 Omega Seamaster 300M Limited Edition...
AED 44,389
Seller
European Watch Company
169
US
Omega De Ville Prestige Blue Dial 39.5mm Steel
Omega De Ville Prestige Blue Dial 39.5mm Steel
AED 6,995
Seller
Timepiece360
AE
Rolex Sea-Dweller
Rolex Sea-Dweller
Price on request
Seller
Luxury Souq Dubai
 
AE
Rolex Sea-Dweller Deepsea, V-Serie, 116660, MK I, Full Set, LC100
Rolex Sea-Dweller Deepsea, V-Serie, 116660, MK I, Full Set, LC100
AED 36,084
Seller
time4watches GmbH
23
DE
Breitling SUPER AVENGER II Chrono 48mm Steel Black Chablon Dial
Breitling SUPER AVENGER II Chrono 48mm Steel Black Chablon Dial
AED 16,343
Free shipping
Seller
SORELLE RONCO
766
IT
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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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