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Rolex Submariner Tropical 1680
TOP
Rolex Submariner Tropical 1680
NZ$ 58,212
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
144
UK
Rolex Sea-Dweller Red 126600 LC-EU 2018
TOP
Rolex Sea-Dweller Red 126600 LC-EU 2018
NZ$ 20,745
Free shipping
Seller
Tradeluxe Uhrenhandels GmbH
41
AT
Rolex Daytona Diamond & Ruby Set 116589SALV
TOP
Rolex Daytona Diamond & Ruby Set 116589SALV
NZ$ 166,742
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
144
UK
Breitling Limited Edition Frecce Tricolori Chronomat 44 - 70...
TOP
Breitling Limited Edition Frecce Tricolori Chronomat 44 - 70...
NZ$ 5,964
Free shipping
Seller
Pawndeluxe
57
NL
Breitling Chronomat 44mm B01 Manufaktur Stahl-/Roségold MOP...
TOP
Breitling Chronomat 44mm B01 Manufaktur Stahl-/Roségold MOP...
NZ$ 12,791
Seller
Uhrenkapital
270
DE
Omega Men's Omega Seamaster Professional 300M 2561.80 Blue...
Omega Men's Omega Seamaster Professional 300M 2561.80 Blue...
NZ$ 2,097
Seller
Collectors Coins & Jewelry
 
US
Rolex Yacht Master
Rolex Yacht Master
NZ$ 15,559
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex Day-Date Borke Ref. 18078 Bj.1983 LC100 +Papiere+Brillia...
Rolex Day-Date Borke Ref. 18078 Bj.1983 LC100 +Papiere+Brillia...
NZ$ 19,016
Seller
Uhren - Borgardts
 
DE
Longines Hydro Conquest
Longines Hydro Conquest
NZ$ 1,383
Seller
SIMARI GIOIELLI
6
IT
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
NZ$ 8,557
Seller
Matthias Wohne Uhrmachermeister
6
DE
Doxa GRANDE METRE BLUE PLANET LIMITED EDITION 800PCS WORLD
TOP
Doxa GRANDE METRE BLUE PLANET LIMITED EDITION 800PCS WORLD
NZ$ 5,388
Free shipping
Seller
Przedsiębiorstwo Handlowe Usługowe
78
PL
Montblanc Timewalker
Montblanc Timewalker
NZ$ 8,116
Seller
Handelshaus Rheinländer
 
DE
Omega De Ville Prestige
TOP
Omega De Ville Prestige
NZ$ 2,950
Seller
Private Seller
NZ
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
NZ$ 2,886
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Rolex 2000 Men's Rolex Sea-Dweller 16600 Stainless 40mm Black...
Rolex 2000 Men's Rolex Sea-Dweller 16600 Stainless 40mm Black...
NZ$ 8,838
Seller
Collectors Coins & Jewelry
 
US
Breitling Superocean  42
Breitling Superocean 42
NZ$ 3,803
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex GMT 16700 Bj.1993 (N) LC100 Tritium Blatt
Rolex GMT 16700 Bj.1993 (N) LC100 Tritium Blatt
NZ$ 13,828
Seller
Uhren - Borgardts
 
DE
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
TOP
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
NZ$ 49,788
Seller
RIVIERAWATCH
72
FR
Breitling Navitimer World (A24322)
Breitling Navitimer World (A24322)
NZ$ 5,616
Seller
The Watch Movement
 
US
Omega Grey Side of the Moon Speedmaster UNWORN
Omega Grey Side of the Moon Speedmaster UNWORN
NZ$ 13,316
Seller
LBA Exquisite Time Pieces
5
US
TAG Heuer Grand Carrera
TAG Heuer Grand Carrera
NZ$ 7,141
Seller
SIMARI GIOIELLI
6
IT
Breitling Superocean II Chronograph
Breitling Superocean II Chronograph
NZ$ 6,742
Seller
Juwelier Vogl GmbH
 
DE
Louis Chevrolet Swiss Watches Chrono-Tour Sport
Louis Chevrolet Swiss Watches Chrono-Tour Sport
NZ$ 2,886
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Rolex 2017 Rolex Air-King 40mm Green Yellow Black Arabic...
Rolex 2017 Rolex Air-King 40mm Green Yellow Black Arabic...
NZ$ 8,137
Seller
Collectors Coins & Jewelry
 
US
Rolex Datejust
Rolex Datejust
NZ$ 6,742
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex GMT 2  Ref.16710 Bj.2007  (Z) Ungetragen LC100  NUR...
Rolex GMT 2 Ref.16710 Bj.2007 (Z) Ungetragen LC100 NUR...
NZ$ 34,575
Seller
Uhren - Borgardts
 
DE
TAG Heuer Grand Carrera CAV518.BFC6237
TAG Heuer Grand Carrera CAV518.BFC6237
NZ$ 9,918
Seller
JOYERÍA TACTOC
 
ES
Omega Constellation Co-Axial 35mm
Omega Constellation Co-Axial 35mm
NZ$ 3,976
Seller
Soprana dal 1910 srl
 
IT
Omega Speedmaster Professional Moon To Mars
Omega Speedmaster Professional Moon To Mars
NZ$ 7,498
Seller
Wrights The Jewellers
 
UK
Omega De Ville Hour Vision
Omega De Ville Hour Vision
NZ$ 20,745
Seller
Sfera GmbH
 
AT
Omega Speedmaster Day Date
Omega Speedmaster Day Date
NZ$ 7,606
Seller
Terzian Garo & Sia OE
 
GR
Louis Chevrolet Swiss Watches LC-01 Classic
Louis Chevrolet Swiss Watches LC-01 Classic
NZ$ 1,441
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Tudor 2015 MINT  Black Bay Heritage Blue 79220B 41mm Stainless...
Tudor 2015 MINT Black Bay Heritage Blue 79220B 41mm Stainless...
NZ$ 3,784
Seller
Collectors Coins & Jewelry
 
US
Rolex Datejust II
Rolex Datejust II
NZ$ 10,027
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex DateJust Stahl 36mm Referenz 1603 Baujahr ca.1974
Rolex DateJust Stahl 36mm Referenz 1603 Baujahr ca.1974
NZ$ 4,754
Seller
Uhren - Borgardts
 
DE
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
NZ$ 6,223
Seller
STECCO GIOIELLI
 
IT
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
NZ$ 16,769
Seller
Soprana dal 1910 srl
 
IT
Rolex Date - Under Factory Warranty & Original Papers
Rolex Date - Under Factory Warranty & Original Papers
NZ$ 8,357
Seller
Horology 411
 
US
Breitling Superocean 42
Breitling Superocean 42
NZ$ 3,457
Seller
Sfera GmbH
 
AT
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
NZ$ 4,212
Seller
Alux Watches
 
US
Louis Chevrolet Swiss Watches Chrono-Tour Classic
Louis Chevrolet Swiss Watches Chrono-Tour Classic
NZ$ 2,886
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Rolex Breitling Windrider Jetstream Chronograph 36mm MOP...
Rolex Breitling Windrider Jetstream Chronograph 36mm MOP...
NZ$ 2,660
Seller
Collectors Coins & Jewelry
 
US
Rolex GMT Master II
Rolex GMT Master II
NZ$ 12,533
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex GMT-Master 1675 LC100 Full Set (Papiere+Rechnung+Besch+Box)
Rolex GMT-Master 1675 LC100 Full Set (Papiere+Rechnung+Besch+Box)
NZ$ 38,032
Seller
Uhren - Borgardts
 
DE
Rolex Sea-Dweller
Rolex Sea-Dweller
NZ$ 11,149
Seller
A. W. Porter & Son Ltd
 
UK
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
NZ$ 5,525
Seller
Martin Wilkinson Ltd
 
UK
Omega Speedmaster Mark II Co-Axial Chronograph
Omega Speedmaster Mark II Co-Axial Chronograph
NZ$ 5,299
Seller
Horology 411
 
US
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
NZ$ 7,686
Seller
Avanti Fine Jewellery
 
UK
Tissot Ballade Powermatic 80 COSC
Tissot Ballade Powermatic 80 COSC
NZ$ 1,539
Seller
ANZOVINO GIOIELLIERI SRL
 
IT
Louis Chevrolet Swiss Watches LC-01 Fashion
Louis Chevrolet Swiss Watches LC-01 Fashion
NZ$ 1,441
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Rolex 1972 Vintage Rolex GMT-Master 1675 Pepsi Blue Red Mark I...
Rolex 1972 Vintage Rolex GMT-Master 1675 Pepsi Blue Red Mark I...
NZ$ 13,755
Seller
Collectors Coins & Jewelry
 
US
Breitling Chronomat 01 Glasboden
Breitling Chronomat 01 Glasboden
NZ$ 9,076
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Breitling Super Avenger Black Limitierte Serie Bj.2009
Breitling Super Avenger Black Limitierte Serie Bj.2009
NZ$ 5,100
Seller
Uhren - Borgardts
 
DE
Omega Constellation 18195191
Omega Constellation 18195191
NZ$ 6,509
Seller
JOYERÍA TACTOC
 
ES
Omega De Ville Hour Vision
Omega De Ville Hour Vision
NZ$ 9,335
Seller
Sfera GmbH
 
AT
Breitling Windrider Chronomat
Breitling Windrider Chronomat
NZ$ 8,817
Seller
Badel Watch
6
BE
Montblanc Timewalker
Montblanc Timewalker
NZ$ 4,659
Seller
Handelshaus Rheinländer
 
DE
Breitling Superocean 42
Breitling Superocean 42
NZ$ 4,114
Seller
Mikes vintage watches
 
UK
Louis Chevrolet Swiss Watches LC-01 Elegance
Louis Chevrolet Swiss Watches LC-01 Elegance
NZ$ 1,441
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Rolex 2011 UNPOLISHED ENGRAVED Rolex Submariner Green Kermit...
Rolex 2011 UNPOLISHED ENGRAVED Rolex Submariner Green Kermit...
NZ$ 15,439
Seller
Collectors Coins & Jewelry
 
US
Rolex GMT Master II
Rolex GMT Master II
NZ$ 40,626
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rolex Milgauss 116400GV Bj.2011 LC100
Rolex Milgauss 116400GV Bj.2011 LC100
NZ$ 10,372
Seller
Uhren - Borgardts
 
DE
TAG Heuer Grand Carrera WAV511B.FC6230
TAG Heuer Grand Carrera WAV511B.FC6230
NZ$ 5,057
Seller
JOYERÍA TACTOC
 
ES
Eberhard & Co. Chrono 120 ÉME Aniversario
Eberhard & Co. Chrono 120 ÉME Aniversario
NZ$ 17,806
Seller
CANTELI JOYEROS SL
 
ES
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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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