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Breitling Limited Edition Frecce Tricolori Chronomat 44 - 70...
TOP
Breitling Limited Edition Frecce Tricolori Chronomat 44 - 70...
AED 15,804
Free shipping
Seller
Pawndeluxe
57
NL
Rolex Sea-Dweller Red 126600 LC-EU 2018
TOP
Rolex Sea-Dweller Red 126600 LC-EU 2018
AED 54,970
Free shipping
Seller
Tradeluxe Uhrenhandels GmbH
41
AT
Rolex Daytona Diamond & Ruby Set 116589SALV
TOP
Rolex Daytona Diamond & Ruby Set 116589SALV
AED 441,832
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
144
UK
Cartier Ballon Bleu 18K White Gold Automatic Chronograph
TOP
Cartier Ballon Bleu 18K White Gold Automatic Chronograph
AED 74,427
Free shipping
Seller
Loucri Jewelers
55
US
Rolex Submariner Tropical 1680
TOP
Rolex Submariner Tropical 1680
AED 154,249
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
144
UK
Breitling Chronomat 44mm B01 Manufaktur Stahl-/Roségold MOP...
TOP
Breitling Chronomat 44mm B01 Manufaktur Stahl-/Roségold MOP...
AED 33,894
Seller
Uhrenkapital
270
DE
Omega Seamaster Planet Ocean FULL SET
Omega Seamaster Planet Ocean FULL SET
AED 12,331
Seller
Private Seller
 
AE
Breitling Blackbird
Breitling Blackbird
AED 20,621
Seller
Private Seller
AE
Rolex Day-Date Borke Ref. 18078 Bj.1983 LC100 +Papiere+Brillia...
Rolex Day-Date Borke Ref. 18078 Bj.1983 LC100 +Papiere+Brillia...
AED 50,389
Seller
Uhren - Borgardts
 
DE
Longines Hydro Conquest
Longines Hydro Conquest
AED 3,665
Seller
SIMARI GIOIELLI
6
IT
Rolex Daytona
Rolex Daytona
AED 63,444
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex Men's Rolex Submariner Date Stainless Steel 40mm Black...
Rolex Men's Rolex Submariner Date Stainless Steel 40mm Black...
AED 22,307
Seller
Collectors Coins & Jewelry
 
US
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
AED 22,675
Seller
Matthias Wohne Uhrmachermeister
5
DE
Louis Chevrolet Swiss Watches Chrono-Tour Sport
Louis Chevrolet Swiss Watches Chrono-Tour Sport
AED 7,646
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Montblanc Timewalker
Montblanc Timewalker
AED 21,507
Seller
Handelshaus Rheinländer
 
DE
Breitling Superocean Héritage II 46 Keramiklünette
Breitling Superocean Héritage II 46 Keramiklünette
AED 13,239
Seller
Hans-Peter Niesen KG
18
DE
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
AED 11,161
Seller
Alux Watches
 
US
Rolex GMT 2  Ref.16710 Bj.2007  (Z) Ungetragen LC100  NUR...
Rolex GMT 2 Ref.16710 Bj.2007 (Z) Ungetragen LC100 NUR...
AED 91,617
Seller
Uhren - Borgardts
 
DE
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
TOP
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
AED 131,928
Seller
RIVIERAWATCH
72
FR
Rolex Submariner Sea-Dweller  NEU
Rolex Submariner Sea-Dweller NEU
AED 38,937
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Panerai 2011  PAM 111 Luminor Marina Manual Wind Black Rubber...
Panerai 2011 PAM 111 Luminor Marina Manual Wind Black Rubber...
AED 15,977
Seller
Collectors Coins & Jewelry
 
US
TAG Heuer Grand Carrera
TAG Heuer Grand Carrera
AED 18,923
Seller
SIMARI GIOIELLI
6
IT
Louis Chevrolet Swiss Watches LC-01 Classic
Louis Chevrolet Swiss Watches LC-01 Classic
AED 3,819
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Omega De Ville Co-Axial Chronometer
Omega De Ville Co-Axial Chronometer
AED 12,826
Seller
van der Weerd Janssen
 
NL
Panerai Luminor 44 Marina Base Logo Acciaio  NEU
Panerai Luminor 44 Marina Base Logo Acciaio NEU
AED 17,819
Seller
Hans-Peter Niesen KG
18
DE
Omega Grey Side of the Moon Speedmaster UNWORN
Omega Grey Side of the Moon Speedmaster UNWORN
AED 35,284
Seller
LBA Exquisite Time Pieces
5
US
Rolex GMT 16700 Bj.1993 (N) LC100 Tritium Blatt
Rolex GMT 16700 Bj.1993 (N) LC100 Tritium Blatt
AED 36,642
Seller
Uhren - Borgardts
 
DE
Breitling Superocean II Chronograph
Breitling Superocean II Chronograph
AED 17,865
Seller
Juwelier Vogl GmbH
 
DE
Rolex Datejust II
Rolex Datejust II
AED 26,569
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Omega Men's Omega Seamaster Professional 300M 2541.80 Blue...
Omega Men's Omega Seamaster Professional 300M 2541.80 Blue...
AED 7,421
Seller
Collectors Coins & Jewelry
 
US
TAG Heuer Grand Carrera CAV518.BFC6237
TAG Heuer Grand Carrera CAV518.BFC6237
AED 26,280
Seller
JOYERÍA TACTOC
 
ES
Louis Chevrolet Swiss Watches LC-01 Elegance
Louis Chevrolet Swiss Watches LC-01 Elegance
AED 3,819
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Breitling Navitimer World
Breitling Navitimer World
AED 19,469
Seller
Leihhaus Lohmann
11
DE
Omega Constellation Co-Axial 35mm
Omega Constellation Co-Axial 35mm
AED 10,536
Seller
Soprana dal 1910 srl
 
IT
Wempe Zeitmeister Chrono Chronometer Ref. WM540001
Wempe Zeitmeister Chrono Chronometer Ref. WM540001
AED 7,054
Seller
Hans-Peter Niesen KG
18
DE
Rolex GMT-Master 1675 LC100 Full Set (Papiere+Rechnung+Besch+Box)
Rolex GMT-Master 1675 LC100 Full Set (Papiere+Rechnung+Besch+Box)
AED 100,778
Seller
Uhren - Borgardts
 
DE
Omega Constellation Co-Axial Chronometer
Omega Constellation Co-Axial Chronometer
AED 18,598
Seller
van der Weerd Janssen
 
NL
Rolex Datejust
Rolex Datejust
AED 16,949
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex Vintage Rolex Daytona Cosmograph 6265 Black 37mm 18K...
Rolex Vintage Rolex Daytona Cosmograph 6265 Black 37mm 18K...
AED 446,557
Seller
Collectors Coins & Jewelry
 
US
Breitling Navitimer World (A24322)
Breitling Navitimer World (A24322)
AED 14,882
Seller
The Watch Movement
 
US
Louis Chevrolet Swiss Watches LC-01 Fashion
Louis Chevrolet Swiss Watches LC-01 Fashion
AED 3,819
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Omega Constellation 18195191
Omega Constellation 18195191
AED 17,247
Seller
JOYERÍA TACTOC
 
ES
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
AED 44,434
Seller
Soprana dal 1910 srl
 
IT
Graham Chronofigther Oversize Diver
Graham Chronofigther Oversize Diver
AED 18,071
Seller
Gomez y Molina Joyeros
 
ES
Breitling Super Avenger Black Limitierte Serie Bj.2009
Breitling Super Avenger Black Limitierte Serie Bj.2009
AED 13,513
Seller
Uhren - Borgardts
 
DE
Omega De Ville Hour Vision
Omega De Ville Hour Vision
AED 54,970
Seller
Sfera GmbH
 
AT
Rolex GMT Master II
Rolex GMT Master II
AED 44,892
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
IWC MINT IWC Portuguese Chronograph Stainless Blue 41mm 3714...
IWC MINT IWC Portuguese Chronograph Stainless Blue 41mm 3714...
AED 18,213
Seller
Collectors Coins & Jewelry
 
US
Breitling Navitimer Limited Edition
Breitling Navitimer Limited Edition
AED 29,772
Free shipping
Seller
Joyce's Fine Jewelry
 
US
Louis Chevrolet Swiss Watches Chrono-Tour Classic
Louis Chevrolet Swiss Watches Chrono-Tour Classic
AED 7,646
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Rolex Sea-Dweller
Rolex Sea-Dweller
AED 29,543
Seller
A. W. Porter & Son Ltd
 
UK
Omega Speedmaster Professional Moon To Mars
Omega Speedmaster Professional Moon To Mars
AED 19,869
Seller
Wrights The Jewellers
 
UK
Montblanc Timewalker
Montblanc Timewalker
AED 12,345
Seller
Handelshaus Rheinländer
 
DE
Rolex DateJust Stahl 36mm Referenz 1603 Baujahr ca.1974
Rolex DateJust Stahl 36mm Referenz 1603 Baujahr ca.1974
AED 12,597
Seller
Uhren - Borgardts
 
DE
Breitling Superocean 42
Breitling Superocean 42
AED 9,162
Seller
Sfera GmbH
 
AT
Breitling Superocean  42
Breitling Superocean 42
AED 10,078
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Breitling MINT Breitling Navitimer World GMT Stainless Black...
Breitling MINT Breitling Navitimer World GMT Stainless Black...
AED 14,864
Seller
Collectors Coins & Jewelry
 
US
Tissot Ballade Powermatic 80 COSC
Tissot Ballade Powermatic 80 COSC
AED 4,077
Seller
ANZOVINO GIOIELLIERI SRL
 
IT
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
AED 7,646
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
TAG Heuer Grand Carrera WAV511B.FC6230
TAG Heuer Grand Carrera WAV511B.FC6230
AED 13,399
Seller
JOYERÍA TACTOC
 
ES
Omega Seamaster Co-Axial Chronometer
Omega Seamaster Co-Axial Chronometer
AED 21,163
Seller
van der Weerd Janssen
 
NL
Breitling Chronomat 44
Breitling Chronomat 44
AED 16,747
Free shipping
Seller
Joyce's Fine Jewelry
 
US
Rolex Explorer 2  LC100  Ref.216570
Rolex Explorer 2 LC100 Ref.216570
AED 26,111
Seller
Uhren - Borgardts
 
DE
Raymond Weil PARSIFAL CHRONO AUTOMATICO ACERO Y ORO
Raymond Weil PARSIFAL CHRONO AUTOMATICO ACERO Y ORO
AED 10,536
Seller
JOYERIA TOMAS
11
ES
Rolex Submariner
Rolex Submariner
AED 45,808
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
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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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