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Zenith Legends of Cohiba Rose Gold
Zenith Legends of Cohiba Rose Gold
AED 43,693
Seller
The Golden Line
AE
Hublot Big Bang Ferrari CARBON 2017 (Limited Edition N65/500)...
Hublot Big Bang Ferrari CARBON 2017 (Limited Edition N65/500)...
AED 87,671
Seller
Private seller
AE
Vacheron Constantin Malte Régulateur Dual Time
Vacheron Constantin Malte Régulateur Dual Time
AED 74,578
Seller
Rent a Box Schmuck und Uhren AG
 
CH
Breitling Chronomat 44 GMT AB042011/BB56-375A
Breitling Chronomat 44 GMT AB042011/BB56-375A
AED 25,394
Seller
Haute Horologe
AE
Graham Chronofighter 43mm Roségold 2CFAR.B10A.C54B
Graham Chronofighter 43mm Roségold 2CFAR.B10A.C54B
AED 38,362
Seller
KROMINI GOLD IMPEX S.R.L
 
RO
TAG Heuer Grand Carrera
TAG Heuer Grand Carrera
AED 10,960
Seller
Reclaimed Jewels
 
NL
Rolex Sea-Dweller red
Rolex Sea-Dweller red
AED 50,414
Seller
Cleopatra Watches & Jewellery
AE
Rolex Datejust
Rolex Datejust
AED 32,041
Seller
Luxury Souq Dubai
AE
Rolex Datejust II Steel 41mm (Ref. 116334)
Rolex Datejust II Steel 41mm (Ref. 116334)
price on request
Seller
Minute Repeater Watches Trading
AE
Ulysse Nardin Maxi Marine Diver Blue Ocean  Limited Edition
Ulysse Nardin Maxi Marine Diver Blue Ocean Limited Edition
AED 28,008
Seller
The Golden Line
AE
Omega constellation  24mm
Omega constellation 24mm
AED 26,141
Seller
Rainbow Tech
AE
Breitling Chronomat 44 Raven Black steel
Breitling Chronomat 44 Raven Black steel
AED 18,668
Seller
Private seller
AE
TAG Heuer Carrera Calibre 8
TAG Heuer Carrera Calibre 8
AED 6,900
Free shipping
Seller
Timepiece360
AE
Rolex Vintage Oyster Perpetual Daydate
Rolex Vintage Oyster Perpetual Daydate
price on request
Seller
GoldenTimeCo
AE
Omega De Ville Chronoscope Watch
Omega De Ville Chronoscope Watch
AED 22,500
Seller
The Store
AE
Rolex EXPLORER II so called "Albino"
Rolex EXPLORER II so called "Albino"
AED 93,822
Seller
Uhren Schöfer GmbH
DE
Breitling Navitimer Chrono-Matic Blacksteel Chronograph
Breitling Navitimer Chrono-Matic Blacksteel Chronograph
AED 23,153
Seller
Luxury Souq Dubai
AE
Breitling Chronomat GMT 47mm (B04 Movement)
Breitling Chronomat GMT 47mm (B04 Movement)
price on request
Seller
Minute Repeater Watches Trading
AE
Zenith Pilot Montre d'Aeronef Type 20 Racer 45MM
Zenith Pilot Montre d'Aeronef Type 20 Racer 45MM
AED 19,792
Seller
The Golden Line
AE
Omega de-ville 34mm
Omega de-ville 34mm
AED 95,227
Seller
Rainbow Tech
AE
Breitling Montbrillant Légende
Breitling Montbrillant Légende
AED 14,029
Seller
Plinio Gioielli S.R.L.
 
IT
TAG Heuer Carrera Calibre 8 GMT
TAG Heuer Carrera Calibre 8 GMT
AED 12,933
Seller
Spliedt & Cie GmbH
 
DE
Rolex Datejust Lady 68158 Full Yellow Gold Diamond
Rolex Datejust Lady 68158 Full Yellow Gold Diamond
price on request
Seller
GoldenTimeCo
AE
Montblanc Meisterstück
Montblanc Meisterstück
AED 5,257
Seller
Private seller
 
HU
Rolex GMT-MASTER II  Tritium
Rolex GMT-MASTER II Tritium
AED 58,748
Seller
Uhren Schöfer GmbH
DE
Breitling Bentley Flying B Chronograph - Steel on Bracelet w
Breitling Bentley Flying B Chronograph - Steel on Bracelet w
AED 25,767
Seller
Luxury Souq Dubai
AE
Rolex Datejust II 18K Yellow Gold/Steel 41mm (Ref. 116333)
Rolex Datejust II 18K Yellow Gold/Steel 41mm (Ref. 116333)
price on request
Seller
Minute Repeater Watches Trading
AE
Ulysse Nardin Marine Chronometer Manufacture Stainless Steel
Ulysse Nardin Marine Chronometer Manufacture Stainless Steel
AED 24,274
Seller
The Golden Line
AE
Omega Seamaster Planet Ocean - men's wristwatch - 2007
Omega Seamaster Planet Ocean - men's wristwatch - 2007
AED 10,522
Estimated price
Seller
Catawiki BV
 
Hublot 301.AI.460.RX
Hublot 301.AI.460.RX
AED 37,955
Seller
Deluxe ( Asia ) Ltd
 
HK
Rolex Submariner
Rolex Submariner
AED 27,651
Seller
SWISSTIME.DK
 
DK
Omega Seamaster Professional 300m Automatic - 41 mm
Omega Seamaster Professional 300m Automatic - 41 mm
AED 7,409
Free shipping
Seller
wagener-gold International e.K.
593
DE
Vacheron Constantin Overseas Automatic Chronometer
Vacheron Constantin Overseas Automatic Chronometer
AED 21,996
Seller
Private seller
 
UK
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...
AED 456,747
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
54
UK
Breitling MARK V COMP 19
Breitling MARK V COMP 19
AED 35,103
Seller
Luxury Souq Dubai
AE
Rolex Datejust II Steel 41mm (Ref. 116300)
Rolex Datejust II Steel 41mm (Ref. 116300)
price on request
Seller
Minute Repeater Watches Trading
AE
Zenith El Primero Chronomaster 1969 Tour Auto LTD 500
Zenith El Primero Chronomaster 1969 Tour Auto LTD 500
AED 25,767
Seller
The Golden Line
AE
Omega Speedmaster 'Broad Arrow' automatic men's...
Omega Speedmaster 'Broad Arrow' automatic men's...
AED 11,399
Estimated price
Seller
Catawiki BV
 
Rolex Oyster Perpetual Datejust Stainless Steel Silver Face...
Rolex Oyster Perpetual Datejust Stainless Steel Silver Face...
AED 12,492
Seller
La Jolla Jewelry and Collateral Loan Company
7
US
Tudor Black Bay Dark
Tudor Black Bay Dark
AED 14,680
Seller
SWISSTIME.DK
 
DK
Rolex Yacht-Master II 44 mm Steel
Rolex Yacht-Master II 44 mm Steel
AED 41,078
Seller
Lombard Perspectiva
RU
Rolex Daytona (White dial)
Rolex Daytona (White dial)
AED 56,492
Seller
Private seller
 
UK
Rolex Datejust 41 NEW Ref. 126334
Rolex Datejust 41 NEW Ref. 126334
AED 34,197
Seller
Steiner Maastricht
46
NL
Breitling Chrono-Matic R14360 Limited Edition 500 Pieces
Breitling Chrono-Matic R14360 Limited Edition 500 Pieces
price on request
Seller
Luxury Souq Dubai
AE
Rolex Datejust art. Rs184bj
Rolex Datejust art. Rs184bj
AED 10,960
Seller
Stroppiana SRL
200
IT
Rolex Sea-Dweller Red / Ref. 126600 NEW UNWORN / FULL-SET / LC EU
Rolex Sea-Dweller Red / Ref. 126600 NEW UNWORN / FULL-SET / LC EU
AED 52,391
Seller
DIAMANDO
 
DE
Omega Seamaster – Planet Ocean XL – Men's Wristwatch
Omega Seamaster – Planet Ocean XL – Men's Wristwatch
AED 12,495
Estimated price
Seller
Catawiki BV
 
Rolex Oyster Perpetual Datejust Stainless Steel White Gold Watch
Rolex Oyster Perpetual Datejust Stainless Steel White Gold Watch
AED 12,492
Seller
La Jolla Jewelry and Collateral Loan Company
7
US
Rolex Explorer 6610 steel
Rolex Explorer 6610 steel
AED 56,973
Seller
A Collected Man
5
UK
Breitling Navitimer Heritage
Breitling Navitimer Heritage
AED 12,583
Seller
Private seller
 
RO
Breitling Chronomat 41 Rosegold/Steel Full Set Unworn
Breitling Chronomat 41 Rosegold/Steel Full Set Unworn
AED 26,086
Seller
Private seller
 
BE
Rolex Deepsea 44mm Steel
Rolex Deepsea 44mm Steel
AED 28,381
Seller
Lombard Perspectiva
RU
IWC Portuguese Chronograph
IWC Portuguese Chronograph
AED 19,724
Seller
Private seller
 
PT
TAG Heuer Grand Carrera
TAG Heuer Grand Carrera
AED 24,109
Seller
Private seller
 
DE
Omega Seamaster Aqua Terra
Omega Seamaster Aqua Terra
price on request
Seller
Luxury Souq Dubai
AE
Louis Moinet Tempograph
Louis Moinet Tempograph
AED 48,079
Seller
Private seller
 
UK
Rolex Sea-Dweller
Rolex Sea-Dweller
AED 67,955
Seller
Private seller
 
SI
Oris PRO DIVER 51 CHRONOGRAPH TITANIUM
Oris PRO DIVER 51 CHRONOGRAPH TITANIUM
AED 13,591
Seller
Private seller
 
GR
Omega Seamaster Planet Ocean Co-Axial Chronometer 45,5mm
Omega Seamaster Planet Ocean Co-Axial Chronometer 45,5mm
AED 15,783
Estimated price
Seller
Catawiki BV
 
Rolex Oyster Perpetual Datejust Copper Salmon Dial Steel Watch
Rolex Oyster Perpetual Datejust Copper Salmon Dial Steel Watch
AED 8,458
Seller
La Jolla Jewelry and Collateral Loan Company
7
US

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.