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Rolex Pearlmaster Datejust 69318
TOP
Rolex Pearlmaster Datejust 69318
NZ$ 26,778
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Franck Muller 18Kt Perpetual Calendar Moon folding closure
TOP
Franck Muller 18Kt Perpetual Calendar Moon folding closure
NZ$ 25,093
Seller
Ingo Freiherr von Seld
9
DE
Rolex Lady Datejust Lapis 18K GOLD GELBGOLD DAMENUHR
TOP
Rolex Lady Datejust Lapis 18K GOLD GELBGOLD DAMENUHR
NZ$ 11,649
Seller
Timeless Watches GmbH
230
DE
Omega Globemaster
Omega Globemaster
NZ$ 6,450
Seller
Private Seller
NZ
Gérald Genta Sport Retro Steel & Rubber Full Set Box + Papers
TOP
Gérald Genta Sport Retro Steel & Rubber Full Set Box + Papers
NZ$ 3,904
Free shipping
Seller
Pawndeluxe
169
NL
Omega CONSTELLATION DOUBLE EAGLE CHRONOMETER DIAMONDS LADY LADIES
TOP
Omega CONSTELLATION DOUBLE EAGLE CHRONOMETER DIAMONDS LADY LADIES
NZ$ 12,533
Seller
A.S. INVESTMENTS SP. Z O.O.
125
PL
Omega CONSTELLATION OMEGA CO-AXIAL 38 MM ROSE GOLD
TOP
Omega CONSTELLATION OMEGA CO-AXIAL 38 MM ROSE GOLD
NZ$ 18,845
Seller
Plus Watch - Luxury Watches
2927
IT
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
TOP
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
NZ$ 111,285
Seller
MMC RIVIERA
6
MC
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
NZ$ 4,398
Seller
Classic Watch
21
DE
Breitling Colt Chronograph Box&Papers/2005, Steel Quartz MINT
TOP
Breitling Colt Chronograph Box&Papers/2005, Steel Quartz MINT
NZ$ 2,333
Seller
M.J.WATCHES
149
BE
Omega DeVille Ladymatic 425.60.34.20.51.002 Ladies Watch
TOP
Omega DeVille Ladymatic 425.60.34.20.51.002 Ladies Watch
NZ$ 13,845
Free shipping
Seller
AB Time Inc.
154
US
Rolex Datejust Edelstahl/ Gelbgold Oysterarmband Automatic...
TOP
Rolex Datejust Edelstahl/ Gelbgold Oysterarmband Automatic...
NZ$ 6,264
Seller
Timeless Watches GmbH
230
DE
Rolex “Four-Line” “Zenith” Daytona Ref. 16520 in Steel
Auction
Rolex “Four-Line” “Zenith” Daytona Ref. 16520 in Steel
NZ$ 27,692
Estimated price
Seller
Fortuna
 
Rolex GMT-Master Vintage UAE Air Force 1675
Rolex GMT-Master Vintage UAE Air Force 1675
NZ$ 191,997
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Ulysse Nardin ACQUA PERPETUAL CALENDAR MARINE DIVER 300M
TOP
Ulysse Nardin ACQUA PERPETUAL CALENDAR MARINE DIVER 300M
NZ$ 14,413
Seller
A.S. INVESTMENTS SP. Z O.O.
125
PL
Omega Seamaster Automatic Chrono
Omega Seamaster Automatic Chrono
NZ$ 4,398
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
252
DE
Rolex Datejust II Diamond Sundust Dial Jubilee Rose Gold
Rolex Datejust II Diamond Sundust Dial Jubilee Rose Gold
NZ$ 19,382
Seller
Ahead Of Time Sunny Isles LLC
9
US
Omega Speedmaster Professional Moonwatch Ref 311.33.44.51.01.001
Omega Speedmaster Professional Moonwatch Ref 311.33.44.51.01.001
NZ$ 9,686
Seller
Horlogerie Desbiolles
 
CH
Rolex Datejust 16233 36 mm Gold Stahl silber Zifferblatt
Rolex Datejust 16233 36 mm Gold Stahl silber Zifferblatt
NZ$ 8,526
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Chopard Mille Miglia 8920 Brescia-Roma-Brescia
Chopard Mille Miglia 8920 Brescia-Roma-Brescia
NZ$ 3,751
Seller
Krono Time
 
RO
Rolex Datejust 41mm  Navy Blue  Index Jubilee 126334
Rolex Datejust 41mm Navy Blue Index Jubilee 126334
NZ$ 14,131
Seller
Harley's Time LLC
158
US
Rolex Explorer II Ref. 16550 in Steel
Auction
Rolex Explorer II Ref. 16550 in Steel
NZ$ 9,231
Estimated price
Seller
Fortuna
 
Rolex Unworn Daytona 116500LN
Rolex Unworn Daytona 116500LN
NZ$ 36,884
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Breitling CHRONO-MATIC 24H CHRONOGRAPHE CHRONOMETER LIMITED...
TOP
Breitling CHRONO-MATIC 24H CHRONOGRAPHE CHRONOMETER LIMITED...
NZ$ 17,032
Seller
A.S. INVESTMENTS SP. Z O.O.
125
PL
Rolex Datejust Turn-O-Graph
Rolex Datejust Turn-O-Graph
NZ$ 5,116
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
252
DE
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
NZ$ 10,213
Free shipping
Seller
SORELLE RONCO
692
IT
Ulysse Nardin El Toro / Black Toro, Perpetual Calendar, GMT,...
Ulysse Nardin El Toro / Black Toro, Perpetual Calendar, GMT,...
NZ$ 36,521
Seller
Horlogerie Desbiolles
 
CH
Rolex Datejust 16620 Jubileeband Edelstahl silber römsich
Rolex Datejust 16620 Jubileeband Edelstahl silber römsich
NZ$ 7,090
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Rolex 116660 Sea Dweller Deep Sea (29188)
Rolex 116660 Sea Dweller Deep Sea (29188)
NZ$ 15,769
Seller
European Watch Company
159
US
Omega Seamaster 300 Black Steel 41mm - 233.30.41.21.01.001
Omega Seamaster 300 Black Steel 41mm - 233.30.41.21.01.001
NZ$ 6,377
Seller
Harley's Time LLC
158
US
Rolex Oyster Perpetual Ref. 1002 in Steel
Auction
Rolex Oyster Perpetual Ref. 1002 in Steel
NZ$ 2,308
Estimated price
Seller
Fortuna
 
Rolex Cosmograph Daytona 116520
Rolex Cosmograph Daytona 116520
NZ$ 27,284
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Breitling Navitimer World A24322
Breitling Navitimer World A24322
NZ$ 8,059
Seller
Henry´s Auktionshaus AG
DE
Rolex Daytona
Rolex Daytona
NZ$ 21,898
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
252
DE
Omega Seamaster Diver 300 M 41 mm – 212.30.41.20.03.001
Omega Seamaster Diver 300 M 41 mm – 212.30.41.20.03.001
NZ$ 4,308
Seller
Mall of the Watch
822
MC
Rolex Sea-Dweller
Rolex Sea-Dweller
NZ$ 21,223
Free shipping
Seller
Pave Jewelers
 
US
Rolex Datejust 116200 Oysterband schwarz Index LC100
Rolex Datejust 116200 Oysterband schwarz Index LC100
NZ$ 9,423
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Rolex 116610LV Submariner Green Ceramic Bezel Green Dial SS...
Rolex 116610LV Submariner Green Ceramic Bezel Green Dial SS...
NZ$ 21,385
Seller
European Watch Company
159
US
Omega Seamaster Diver 300 M Blue dial 212.30.41.20.03.001
Omega Seamaster Diver 300 M Blue dial 212.30.41.20.03.001
NZ$ 4,438
Seller
Harley's Time LLC
158
US
Omega Seamaster AQUA TERRA Co-Axial Master Chronometer.Steel
Omega Seamaster AQUA TERRA Co-Axial Master Chronometer.Steel
NZ$ 7,090
Free shipping
Seller
SORELLE RONCO
692
IT
Rolex Big Red Daytona 6263
Rolex Big Red Daytona 6263
NZ$ 161,580
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Rolex Pearlmaster Diamonds Reference 69308
Rolex Pearlmaster Diamonds Reference 69308
NZ$ 32,129
Seller
Henry´s Auktionshaus AG
DE
Breitling Bentley Supersport
Breitling Bentley Supersport
NZ$ 7,898
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
252
DE
Breguet Transatlantique Type XX Ref.3800 39mm S/s Flyback
Breguet Transatlantique Type XX Ref.3800 39mm S/s Flyback
NZ$ 6,923
Seller
R&R Watches, Inc.
19
US
Rolex Datejust 126334 Slate Roman
Rolex Datejust 126334 Slate Roman
NZ$ 14,000
Seller
Labelle Jewelry
46
US
Breitling Old Navitimer II Gold Stahl D13322
Breitling Old Navitimer II Gold Stahl D13322
NZ$ 5,654
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Omega Seamaster 300
Omega Seamaster 300
NZ$ 6,444
Seller
SW Watches
15
DE
Omega Seamaster Diver 300 M Black dial 212.30.41.20.01.003
Omega Seamaster Diver 300 M Black dial 212.30.41.20.01.003
NZ$ 4,438
Seller
Harley's Time LLC
158
US
Bucherer Officially Certified Chronometer - Box&Buckle,...
Bucherer Officially Certified Chronometer - Box&Buckle,...
NZ$ 1,256
Seller
ChronoTimepieces
25
BG
Rolex Submariner Tropical 1680
Rolex Submariner Tropical 1680
NZ$ 59,620
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Rolex Datejust Medium
Rolex Datejust Medium
NZ$ 5,367
Seller
Henry´s Auktionshaus AG
DE
Omega Seamaster Co Axial Aqua Terra
Omega Seamaster Co Axial Aqua Terra
NZ$ 5,654
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
252
DE
Rolex 1680 Vintage Submariner 1680 SS / 9315 Bracelet (28022)
Rolex 1680 Vintage Submariner 1680 SS / 9315 Bracelet (28022)
NZ$ 20,308
Seller
European Watch Company
159
US
Rolex Datejust 41 Blue Index
Rolex Datejust 41 Blue Index
NZ$ 13,846
Seller
Labelle Jewelry
46
US
Rolex Lady Yacht-Master 69628 Perlmutt ZB mit Rubinen
Rolex Lady Yacht-Master 69628 Perlmutt ZB mit Rubinen
NZ$ 26,744
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Omega Seamaster Aqua Terra 150 M
Omega Seamaster Aqua Terra 150 M
NZ$ 5,367
Seller
SW Watches
15
DE
Omega Seamaster 300 233.32.41.21.01.002 Master Co-Axial 41m
Omega Seamaster 300 233.32.41.21.01.002 Master Co-Axial 41m
NZ$ 6,285
Seller
Harley's Time LLC
158
US
Breitling Transocean Chronograph
Breitling Transocean Chronograph
NZ$ 22,239
Free shipping
Seller
David Celma
66
ES
Rolex Rare Day-Date Omani 1803
Rolex Rare Day-Date Omani 1803
NZ$ 75,788
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Rolex Oyster Perpetual Medium Ref. 67488
Rolex Oyster Perpetual Medium Ref. 67488
NZ$ 15,239
Seller
Henry´s Auktionshaus AG
DE
Omega Seamaster 300 Liquidmetal
Omega Seamaster 300 Liquidmetal
NZ$ 8,526
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
252
DE
Rolex DATEJUST II Special Edition Rainbow Baguette + Diamonds
Rolex DATEJUST II Special Edition Rainbow Baguette + Diamonds
NZ$ 20,918
Seller
Luxus Ritter
88
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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