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Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
TOP
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
Rp. 1,040,148,608
Seller
MMC RIVIERA
6
MC
Franck Muller 18Kt Perpetual Calendar Moon folding closure
TOP
Franck Muller 18Kt Perpetual Calendar Moon folding closure
Rp. 234,536,736
Seller
Ingo Freiherr von Seld
9
DE
Omega De Ville Prestige 18K Gold Luxusuhr Goldband Unisex...
TOP
Omega De Ville Prestige 18K Gold Luxusuhr Goldband Unisex...
Rp. 117,419,360
Seller
Uhrenkapital
319
DE
Perrelet Turbine Macau  (Limited Edition)
TOP
Perrelet Turbine Macau (Limited Edition)
Rp. 68,784,016
Free shipping
Seller
Istock LTD
99
LV
Rolex LADY PEARLMASTER DATEJUST MASTERPIECE GOLD DIAMANT DIAMOND
TOP
Rolex LADY PEARLMASTER DATEJUST MASTERPIECE GOLD DIAMANT DIAMOND
Rp. 301,810,848
Seller
Timeless Watches GmbH
216
DE
Ulysse Nardin Maxi Marine Diver 200m 45mm NEW
TOP
Ulysse Nardin Maxi Marine Diver 200m 45mm NEW
Rp. 100,491,776
Seller
Timepiece Bank
376
BE
Bulgari Diagono Scuba Automatic Chronograph 18K Gold  SC38G...
TOP
Bulgari Diagono Scuba Automatic Chronograph 18K Gold SC38G...
Rp. 93,948,904
Free shipping
Seller
Pawndeluxe
136
NL
Hublot King Power F1 India,  Ltd Edition, Box & Papers
TOP
Hublot King Power F1 India, Ltd Edition, Box & Papers
Rp. 310,573,024
Seller
Tempvs Ltd
106
UK
Rolex Day-Date 40 Everose-Gold 228345RBR Choco Diamant
TOP
Rolex Day-Date 40 Everose-Gold 228345RBR Choco Diamant
Rp. 663,681,920
Seller
Uhren2000 GmbH
339
DE
Breitling Crosswind
Breitling Crosswind
Rp. 40,000,000
Seller
Timeology.co.id
ID
Rolex Daydate
Rolex Daydate
Rp. 146,795,168
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
226
DE
Breitling Navitimer 1 Chronograph 41
Breitling Navitimer 1 Chronograph 41
Rp. 67,945,192
Seller
LUX-Timepieces GmbH
615
DE
Ball GM1020D-LCJ-BK Trainmaster WorldTime Automatic Black Dial...
Ball GM1020D-LCJ-BK Trainmaster WorldTime Automatic Black Dial...
Rp. 16,137,891
Free shipping
Seller
The Watch Outlet
7
US
Rolex Submariner Ref. 16610
Rolex Submariner Ref. 16610
Rp. 100,491,776
Seller
Henry´s Auktionshaus AG
DE
Rolex Datejust 126334
Rolex Datejust 126334
Rp. 136,334,800
Seller
Labelle Jewelry
39
US
Omega Seamaster Planet Ocean 600m Co-Axial Ceramic 232.30.38.2...
TOP
Omega Seamaster Planet Ocean 600m Co-Axial Ceramic 232.30.38.2...
Rp. 44,457,964
Free shipping
Seller
Pawndeluxe
136
NL
Rolex Air King
Rolex Air King
Rp. 55,194,980
Seller
Pfandhaus SCHUMACHERS GmbH
 
DE
Ulysse Nardin Marine Chronometer Automatic Mens Watch 1183-126...
Ulysse Nardin Marine Chronometer Automatic Mens Watch 1183-126...
Rp. 94,767,504
Seller
Watch Obsession
5
US
Omega Seamaster Aqua Terra
Omega Seamaster Aqua Terra
Rp. 72,139,336
Seller
Juwelier van Willegen Rotterdam
16
NL
Omega Seamaster Co Axial Aqua Terra
Omega Seamaster Co Axial Aqua Terra
Rp. 52,846,260
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
226
DE
Panerai Luminor Marina Automatic Acciaio
Panerai Luminor Marina Automatic Acciaio
Rp. 87,909,328
Seller
LUX-Timepieces GmbH
615
DE
Omega Seamaster Aqua Terra Men’s Stainless Steel Automatic...
Omega Seamaster Aqua Terra Men’s Stainless Steel Automatic...
Rp. 33,194,560
Free shipping
Seller
The Watch Outlet
7
US
Breitling Navitimer World A24322
Breitling Navitimer World A24322
Rp. 75,326,896
Seller
Henry´s Auktionshaus AG
DE
TAG Heuer Watch Grand Carrera CAV5185.FT6020
TAG Heuer Watch Grand Carrera CAV5185.FT6020
Rp. 68,702,520
Seller
Watchfinder.co.uk Ltd
UK
Ulysse Nardin Nardin Marine Chronometer 43mm Blue Dial - FULL SET
TOP
Ulysse Nardin Nardin Marine Chronometer 43mm Blue Dial - FULL SET
Rp. 65,428,704
Free shipping
Seller
Pawndeluxe
136
NL
Rolex Datejust 41--126334--2018--EU--
Rolex Datejust 41--126334--2018--EU--
Rp. 121,630,272
Seller
Marchal Watches
 
NL
Rolex Sea-Dweller Black/Steel Ø43mm - 126600
Rolex Sea-Dweller Black/Steel Ø43mm - 126600
Rp. 211,619,232
Seller
CKLY Trading Limited
 
HK
Breitling Transocean Unitime Pilot Blacksteel Limited Edition
Breitling Transocean Unitime Pilot Blacksteel Limited Edition
Rp. 202,661,200
Seller
Juwelier van Willegen Rotterdam
16
NL
Breitling Chronomat 41
Breitling Chronomat 41
Rp. 65,428,704
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
226
DE
Omega Seamaster Planet Ocean 600 M Co-Axial Master Chronometer
Omega Seamaster Planet Ocean 600 M Co-Axial Master Chronometer
Rp. 72,642,632
Seller
LUX-Timepieces GmbH
615
DE
Ball WATCH ENGINEER HYDROCARBON AIRBORNE MEN'S 42MM WATCH...
Ball WATCH ENGINEER HYDROCARBON AIRBORNE MEN'S 42MM WATCH...
Rp. 28,215,376
Free shipping
Seller
The Watch Outlet
7
US
Breitling Superocean Heritage U2337012/BB81
Breitling Superocean Heritage U2337012/BB81
Rp. 88,748,168
Seller
Henry´s Auktionshaus AG
DE
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
Rp. 50,329,768
Seller
COMPRA-VENTA JAVIER CALVO
ES
Zenith Men's 95.9000.9004/78.R582 Defy El Primero 21 - 44.00
Zenith Men's 95.9000.9004/78.R582 Defy El Primero 21 - 44.00
Rp. 127,418,200
Seller
HarveyStore DE
10
DE
Omega Watch Planet Ocean 232.30.38.20.01.001
Omega Watch Planet Ocean 232.30.38.20.01.001
Rp. 54,773,784
Seller
Watchfinder.co.uk Ltd
UK
Omega Seamaster DIVER 300 Co-Axial 300 M 41 mm  Blue Dial
Omega Seamaster DIVER 300 Co-Axial 300 M 41 mm Blue Dial
Rp. 46,135,624
Free shipping
Seller
SORELLE RONCO
606
IT
Chopard Jacky Ickx Limited edition
Chopard Jacky Ickx Limited edition
Rp. 144,278,672
Seller
Juwelier van Willegen Rotterdam
16
NL
Rolex Submariner
Rolex Submariner
Rp. 299,462,112
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
226
DE
Rolex Submariner Date
Rolex Submariner Date
Rp. 436,191,328
Seller
LUX-Timepieces GmbH
615
DE
Breitling Chronomat Evolution Rose Gold and Stainless Steel...
Breitling Chronomat Evolution Rose Gold and Stainless Steel...
Rp. 63,721,700
Free shipping
Seller
The Watch Outlet
7
US
Rolex Pearlmaster Diamonds Reference 69308
Rolex Pearlmaster Diamonds Reference 69308
Rp. 300,300,960
Seller
Henry´s Auktionshaus AG
DE
Rolex Lady-Datejust, Ref. 79178, Zustand sehr gut (1)
Rolex Lady-Datejust, Ref. 79178, Zustand sehr gut (1)
Rp. 127,334,312
Seller
S3 WATCH AG
17
DE
Ball Engineer Hydrocarbon NEDU
Ball Engineer Hydrocarbon NEDU
Rp. 70,461,680
Seller
Vaessen Juweliers
9
NL
Omega Watch Seamaster 300m 2254.50.00
Omega Watch Seamaster 300m 2254.50.00
Rp. 44,233,124
Seller
Watchfinder.co.uk Ltd
UK
Rolex Yacht-Master Blu Dial Oyster Rolesium 40mm 116622
Rolex Yacht-Master Blu Dial Oyster Rolesium 40mm 116622
Rp. 166,088,240
Free shipping
Seller
SORELLE RONCO
606
IT
Breitling Bentley B05 Unitime
Breitling Bentley B05 Unitime
Rp. 218,766,736
Seller
Juwelier van Willegen Rotterdam
16
NL
Breitling Chronomat 41 Airborne
Breitling Chronomat 41 Airborne
Rp. 64,589,872
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
226
DE
Rolex Datejust 41
Rolex Datejust 41
Rp. 156,022,288
Seller
LUX-Timepieces GmbH
615
DE
Ball GM1020D-L1CAJ-BK Trainmaster World Time Automatic Black...
Ball GM1020D-L1CAJ-BK Trainmaster World Time Automatic Black...
Rp. 17,767,980
Free shipping
Seller
The Watch Outlet
7
US
Rolex Datejust Medium
Rolex Datejust Medium
Rp. 50,162,004
Seller
Henry´s Auktionshaus AG
DE
Rolex Sea-Dweller Deepsea James Cameron 44mm Steel Watch 2017
Rolex Sea-Dweller Deepsea James Cameron 44mm Steel Watch 2017
Rp. 216,459,968
Seller
WT Time Pieces
44
UK
Chopard Mille Miglia GTS Automatic
Chopard Mille Miglia GTS Automatic
Rp. 89,419,224
Seller
Vaessen Juweliers
9
NL
Breitling Men's A1733110/BC30/152S/A20SS.1 Avenger II Seawolf...
Breitling Men's A1733110/BC30/152S/A20SS.1 Avenger II Seawolf...
Rp. 42,277,008
Seller
HarveyStore DE
10
DE
Chopard Mille Miglia Jacky Ickx Edition 4 (Revision von 07/18)
Chopard Mille Miglia Jacky Ickx Edition 4 (Revision von 07/18)
Rp. 70,293,912
Seller
Pfandhaus SCHUMACHERS GmbH
 
DE
Breitling Chronomat 44 Blacksteel
Breitling Chronomat 44 Blacksteel
Rp. 126,914,904
Seller
Juwelier van Willegen Rotterdam
16
NL
Rolex Yacht Master Damenuhr
Rolex Yacht Master Damenuhr
Rp. 150,989,312
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
226
DE
Breitling Navitimer World
Breitling Navitimer World
Rp. 72,474,864
Seller
LUX-Timepieces GmbH
615
DE
Rolex Oyster Perpetual 36mm Men's Steel No-Date Black Arabic...
Rolex Oyster Perpetual 36mm Men's Steel No-Date Black Arabic...
Rp. 59,276,000
Free shipping
Seller
The Watch Outlet
7
US
Rolex Date 115200
Rolex Date 115200
Rp. 71,971,568
Seller
Henry´s Auktionshaus AG
DE
Rolex Submariner Date
Rolex Submariner Date
Rp. 131,758,248
Seller
Vine Jewellers Ltd
 
UK
Omega Seamaster America's Cup
Omega Seamaster America's Cup
Rp. 36,908,496
Seller
COMPRA-VENTA JAVIER CALVO
ES
Rolex Datejust, medium, Ref. 178240, LC100, wie neu, Service
Rolex Datejust, medium, Ref. 178240, LC100, wie neu, Service
Rp. 71,971,568
Seller
S3 WATCH AG
17
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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