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TOP
Omega 123.10.38.22.01.001 CONSTELLATION
AU$ 8,406
Verified Dealer
7
HK
TOP
Omega 123.25.38.22.02.002 CONSTELLATION
AU$ 16,126
Verified Dealer
7
HK
TOP
Omega 231.10.39.21.02.002 Seamaster Aqua Terra
AU$ 6,525
Verified Dealer
7
HK
TOP
Omega Globemaster
AU$ 6,669
Verified Dealer
7
HK
Chopard Mille Miglia Automatic Mille Miglia
AU$ 46,057
Verified Dealer
52
US
Rolex Sky Dweller 45mm VS Diamond Watch 26.5 Ct
AU$ 94,684
Verified Dealer
24
US
TOP
TAG Heuer Carrera Heuer-02T
AU$ 19,800
Private Seller
 
AU
Tudor Black Bay Fifty-Eight Steel Black Dial 79030N
AU$ 6,143
Verified Dealer
720
BE
Omega Seamaster Diver 300 M full set
AU$ 4,411
Verified Dealer
130
NL
Omega New Seamaster 232.30.42.21.01.002 Planet Ocean Steel...
AU$ 7,883
Verified Dealer
30
US
Omega Seamaster Planet Ocean 600M Co-Axial 45.5 Master...
AU$ 10,654
Free shipping
Verified Dealer
1156
US
Breitling Chronomat Evolution Chronograph B13356 Box Papers...
AU$ 5,110
Verified Dealer
TW
Breitling Chronomat Windrider MOP Dial A13352
AU$ 3,750
Verified Dealer
37
AU
Rolex Submariner Date Bi-Color ZB Sonnenblau 116613LB
AU$ 24,354
Verified Dealer
440
DE
Omega Seamaster Aqua Terra 231.10.42.21.01.004
AU$ 6,124
Free shipping
Verified Dealer
137
US
TOP
Rolex Lady-Datejust 26
AU$ 22,997
Verified Dealer
24
CH
Hentschel H1 Chronometer White Gold / Steel, 39.5mm German...
AU$ 9,150
Verified Dealer
13
AU
Rolex Day-Date 36 18248 "Bark" with Blue Vignette Serti...
AU$ 21,000
Private Seller
 
AU
Breitling New Chronomat AB011010/BB08 Black Steel Box/Papers/2...
AU$ 6,831
Verified Dealer
30
US
Omega De Ville Prestige Co-Axial 39.5 Stainless Steel / Silver...
AU$ 3,756
Free shipping
Verified Dealer
1156
US
Omega Seamaster 300 233.32.41.21.01.001 Watch with Nylon...
AU$ 13,902
Free shipping
Verified Dealer
364
US
Omega Seamaster Diver Chrono 300m Blue Waved Dial 2598.80
AU$ 3,600
Verified Dealer
37
AU
TOP
Rolex Lady Datejust Pearlmaster Masterpiece 18K Gold
AU$ 14,799
Verified Dealer
360
DE
Chopard LUC Lunar One Platinum
AU$ 89,907
Free shipping
Verified Dealer
9
AU
TOP
Rolex Datejust 36
AU$ 29,132
Verified Dealer
24
CH
TOP
Sinn 910 Jubiläum (Limited Edition)
AU$ 9,156
Free shipping
Verified Dealer
245
LV
Omega Speedmaster Racing
AU$ 99,000
Private Seller
 
AU
Omega Aqua Terra 150M Co-Axial
AU$ 6,575
Verified Dealer
5
IT
TOP
Breitling Navitimer Triple Date Moonphase Chrono - A1938021/BD...
AU$ 10,570
Free shipping
Verified Dealer
424
NL
Ball Engineer II Arabic Chronometer White Dial NM2026C-S4CAJ-SL
AU$ 1,880
Verified Dealer
16
AU
TOP
Eberhard & Co. Chrono 120 ÉME Aniversario Edicion Limitada
AU$ 14,482
Verified Dealer
50
ES
TOP
Rolex OYSTER PERPETUAL CHRONOMETER 18K GOLD HONEYCOMB WABENBLATT
AU$ 13,300
Verified Dealer
360
DE
Chopard L.U.C Quattro Mark II
AU$ 38,087
Free shipping
Verified Dealer
9
AU
TOP
Breguet Marine
AU$ 17,629
Verified Dealer
24
CH
TOP
Sinn Diving Watch U1 B
AU$ 3,030
Verified Dealer
245
LV
Breitling Super Avenger II Blacksteel - Black Dia - M13371BU/B...
AU$ 20,000
Private Seller
 
AU
Omega Speedmaster Moonwatch Moonphase 44 304.23.44.52.13.001
AU$ 14,481
Verified Dealer
792
DE
TOP
Chopard L.U.C Pro One Diver black dial 42,5 - TOP CONDITION
AU$ 5,160
Free shipping
Verified Dealer
424
NL
Breitling Premier Chronograph 42
AU$ 6,426
Free shipping
Verified Dealer
106
HK
Omega Seamaster Planet Ocean 45.5mm
AU$ 4,659
Free shipping
Verified Dealer
LB
TOP
Omega Seamaster Planet Ocean Master 43,5 PyeongChang 2018 Limited
AU$ 9,089
Verified Dealer
440
DE
Chopard Mille Miglia GTS Power Control
AU$ 23,971
Free shipping
Verified Dealer
9
AU
TOP
Hublot Classic Fusion Ultra-Thin 42
AU$ 11,495
Verified Dealer
24
CH
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
AU$ 4,078
Verified Dealer
60
DE
Rolex Datejust 41mm Fluted Bezel Oyster Bracelet
AU$ 14,100
Private Seller
 
AU
Omega Speedmaster Moonwatch Moonphase 44 304.33.44.52.01.001
AU$ 11,419
Verified Dealer
792
DE
TOP
Hermès Clipper XL Ø 44 mm Automatic Chronograph - CP1910
AU$ 4,078
Free shipping
Verified Dealer
424
NL
Omega Seamaster Diver 300 M
AU$ 4,617
Verified Dealer
 
UK
TAG Heuer Heritage Autavia Chronometer 42mm Isograph WBE5190.F...
AU$ 6,492
Verified Dealer
1775
DE
TOP
Omega Seamaster Olympic Games Limited Edition 522.32.40.20.01.003
AU$ 7,058
Verified Dealer
440
DE
Chopard L.U.C Perpetual Twin
AU$ 27,550
Free shipping
Verified Dealer
9
AU
TOP
Breguet Reine de Naples
AU$ 33,733
Verified Dealer
24
CH
Omega Seamaster Aqua Terra
AU$ 8,995
Verified Dealer
 
AU
Omega Seamaster Planet Ocean Chronograph
AU$ 8,900
Private Seller
 
AU
Rolex Datejust 36
AU$ 11,900
Verified Dealer
 
AU
Chopard Grand Prix de Monaco
AU$ 12,955
Verified Dealer
52
US
Omega De Ville Hour Vision
AU$ 8,000
Private Seller
 
AU
Omega Speedmaster 57 Chronograph
AU$ 7,995
Private Seller
 
AU
Breitling Avenger Hurricane
AU$ 7,800
Private Seller
 
AU
Omega Plant Ocean Chrono
AU$ 7,250
Private Seller
 
AU
Breitling Chronomat 44
AU$ 7,200
Private Seller
 
AU
IWC Aquatimer Chronograph
AU$ 7,050
Private Seller
 
AU
Ernest Borel Chronometer
AU$ 7,000
Private Seller
 
AU
Breitling Bentley 6.75
AU$ 5,999
Private Seller
 
AU
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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.