Buyer Protection Authenticity Guarantee Why Chrono24? Australia  | AUD
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Chopard L.U.C Tourbillon Heritage 161911-9001 RRP £152,800 Ltd Ed
TOP
Chopard L.U.C Tourbillon Heritage 161911-9001 RRP £152,800 Ltd Ed
AU$ 67,928
Seller
The Watch Directory
41
UK
Ball DM3108A-SCJBK
Ball DM3108A-SCJBK
AU$ 2,680
Seller
JOYCE JEWELLERY
 
AU
Omega Speedmaster Moonwatch Co-Axial 2017
TOP
Omega Speedmaster Moonwatch Co-Axial 2017
AU$ 12,525
Seller
MASTROLORENZI S.A.S DI MATTIA MASTROLORENZI & CO.
48
IT
Rolex Oyster Perpetual DateJust Automatic Steel Mens Watch 1625
TOP
Rolex Oyster Perpetual DateJust Automatic Steel Mens Watch 1625
AU$ 3,621
Seller
Watch World Star
150
UK
Sinn 956 Klassik
TOP
Sinn 956 Klassik
AU$ 4,582
Seller
Classic Watch
 
DE
Omega Seamaster Professional 300 M 2532.80.00
TOP
Omega Seamaster Professional 300 M 2532.80.00
AU$ 2,854
Free shipping
Seller
WatchPA
7
SI
Ulysse Nardin Classico Paul David Nardin
TOP
Ulysse Nardin Classico Paul David Nardin
AU$ 9,513
Free shipping
Seller
Sense of Time
11
LV
Zenith Vintage El Primero Sub-Sea "Diver" / 44 mm /...
TOP
Zenith Vintage El Primero Sub-Sea "Diver" / 44 mm /...
AU$ 6,817
Free shipping
Seller
VintageCaliber GmbH
32
DE
Omega Speedmaster 38mm Diamonds 3815.71.53
TOP
Omega Speedmaster 38mm Diamonds 3815.71.53
AU$ 6,310
Seller
Fratelli Monterisi Gioielli S.r.L.
 
IT
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
AU$ 4,188
Seller
Private Seller
AU
Longines Master Collection Chronograph Moonphase Calendar
Longines Master Collection Chronograph Moonphase Calendar
AU$ 2,499
Seller
Private Seller
AU
Omega Seamaster Professional Chronometer Diver 300m 2532.80
Omega Seamaster Professional Chronometer Diver 300m 2532.80
AU$ 2,500
Seller
Private Seller
AU
Omega De Ville Hour Vision (Blue - Orbis)
Omega De Ville Hour Vision (Blue - Orbis)
AU$ 7,500
Seller
Private Seller
AU
Tudor Heritage Black Bay Bucherer in Blue
Tudor Heritage Black Bay Bucherer in Blue
AU$ 12,000
Seller
Private Seller
AU
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
AU$ 5,628
Seller
Private Seller
AU
Ball Watch for BMW GMT
Ball Watch for BMW GMT
AU$ 3,250
Seller
Private Seller
AU
Omega Constellation
TOP
Omega Constellation
AU$ 2,500
Seller
Private Seller
AU
Omega Constellation Pie Pan De Luxe 1955 All Orig  Rose Gold...
Omega Constellation Pie Pan De Luxe 1955 All Orig Rose Gold...
AU$ 3,175
Free shipping
Seller
Hobart Town Antique Jewellery
AU
Louis Moinet Memoris Red Eclipse
Louis Moinet Memoris Red Eclipse
AU$ 149,007
BrandBoutique Member
Louis Moinet
Omega Seamaster Aqua Terra
TOP
Omega Seamaster Aqua Terra
AU$ 12,827
Seller
Private Seller
AU
Omega Seamaster 300M Co-Axial 41mm
Omega Seamaster 300M Co-Axial 41mm
AU$ 3,850
Free shipping
Seller
Watch Trader Pty Ltd
AU
Rolex Sea-Dweller 16600 D Series
Rolex Sea-Dweller 16600 D Series
AU$ 9,300
Free shipping
Seller
The Watch Culture
AU
Breitling Navitimer 01 (46 MM)
Breitling Navitimer 01 (46 MM)
AU$ 7,848
Seller
Gold Impex Handelsgesellschaft m.b. H.
 
AT
Swiss Military Cx Swiss Military 20000 Feet Diving Watch World...
Swiss Military Cx Swiss Military 20000 Feet Diving Watch World...
AU$ 4,435
Seller
Watchpartners
AU
Breitling SuperOcean II  Abyss Yellow
Breitling SuperOcean II Abyss Yellow
AU$ 3,400
Seller
Topwatch Pty Ltd
AU
Omega Seamaster Black Dial Automatic Steel 212.30.41.20.01.003
Omega Seamaster Black Dial Automatic Steel 212.30.41.20.01.003
AU$ 4,495
Seller
Zaeger Pty Ltd
AU
Omega Iconic US Army Ref; 2179 / CK 2179 30t2 Original Full Size
Omega Iconic US Army Ref; 2179 / CK 2179 30t2 Original Full Size
AU$ 2,225
Free shipping
Seller
Hobart Town Antique Jewellery
AU
Louis Moinet Memoris
Louis Moinet Memoris
AU$ 74,354
BrandBoutique Member
Louis Moinet
Rolex Sea-Dweller Anniversary 50 (new2017)
Rolex Sea-Dweller Anniversary 50 (new2017)
AU$ 19,025
Seller
LL TRADES LIMITED
HK
Omega Planet Ocean Titanium Chronograph 45.5mm
Omega Planet Ocean Titanium Chronograph 45.5mm
AU$ 7,850
Seller
Watch Trader Pty Ltd
AU
Omega Seamaster Diver Chrono 300m Blue Waved Dial 2598.80
Omega Seamaster Diver Chrono 300m Blue Waved Dial 2598.80
AU$ 3,497
Free shipping
Seller
The Watch Culture
AU
Breitling Navitimer 01 (46 MM)
Breitling Navitimer 01 (46 MM)
AU$ 7,848
Seller
Gold Impex Handelsgesellschaft m.b. H.
 
AT
Swiss Military Cx Swiss Military 20000 Feet Diving Watch World...
Swiss Military Cx Swiss Military 20000 Feet Diving Watch World...
AU$ 4,435
Seller
Watchpartners
AU
Ulysse Nardin Monaco Yacht Show 2010 LIMITED EDITION
Ulysse Nardin Monaco Yacht Show 2010 LIMITED EDITION
AU$ 20,186
Seller
BuyGoodWatches
US
Rolex Explorer II White dial Stainless Steel GMT 216570 WSO
Rolex Explorer II White dial Stainless Steel GMT 216570 WSO
AU$ 9,495
Seller
Zaeger Pty Ltd
AU
Bulgari DG42BSCVDCH
TOP
Bulgari DG42BSCVDCH
AU$ 7,697
Seller
Deluxe ( Asia ) Ltd
16
HK
Rolex Datejust
Rolex Datejust
AU$ 12,523
Seller
Juwelier Rubin GbR
 
DE
Rolex Sea-Dweller Deepsea
Rolex Sea-Dweller Deepsea
AU$ 18,232
Seller
LL TRADES LIMITED
HK
TAG Heuer Grand Carrera Calibre 36 RS
TAG Heuer Grand Carrera Calibre 36 RS
AU$ 5,995
Seller
Watch Trader Pty Ltd
AU
TAG Heuer Sport Elegance Chronometer Aut.  WG5113
TAG Heuer Sport Elegance Chronometer Aut. WG5113
AU$ 1,337
Free shipping
Seller
The Watch Culture
AU
Mühle Glashütte Teutonia II
Mühle Glashütte Teutonia II
AU$ 2,362
Seller
Gold Impex Handelsgesellschaft m.b. H.
 
AT
Swiss Military Cx Swiss Military 20000 Feet Watch World Record...
Swiss Military Cx Swiss Military 20000 Feet Watch World Record...
AU$ 4,435
Seller
Watchpartners
AU
Omega 42420372002001
TOP
Omega 42420372002001
AU$ 6,405
Free shipping
Seller
好百年鐘錶珠寶 Good Century Watches & Jewelry Co.Ltd
 
HK
Breitling Chronomat Black Dial 18k Rose Gold & Steel CB011012
Breitling Chronomat Black Dial 18k Rose Gold & Steel CB011012
AU$ 14,990
Seller
Zaeger Pty Ltd
AU
Hublot 301.AI.460.RX
TOP
Hublot 301.AI.460.RX
AU$ 13,664
Seller
Deluxe ( Asia ) Ltd
16
HK
Omega De Ville Stainless Steel White Automatic 424.10.33.20.05...
TOP
Omega De Ville Stainless Steel White Automatic 424.10.33.20.05...
AU$ 3,580
Seller
VIP WATCH & JEWELLERY
21
HK
Omega Seamaster Planet Ocean - 232.30.46.21.01.002 - NO...
Auction
Omega Seamaster Planet Ocean - 232.30.46.21.01.002 - NO...
AU$ 159
Estimated price
Seller
Catawiki BV
 
Omega Speedmaster Automatic Chronograph 38mm
Omega Speedmaster Automatic Chronograph 38mm
AU$ 6,995
Seller
Watch Trader Pty Ltd
AU
Omega Speedmaster 125 Anniversary Chronograph
Omega Speedmaster 125 Anniversary Chronograph
AU$ 3,700
Free shipping
Seller
The Watch Culture
AU
Rolex Air King
Rolex Air King
AU$ 5,692
Seller
Gold Impex Handelsgesellschaft m.b. H.
 
AT
Omega Seamaster Professional  300m Automatic - 41 mm
Omega Seamaster Professional 300m Automatic - 41 mm
AU$ 2,838
Seller
wagener-gold International e.K.
810
DE
Rolex Explorer II scat/gar art. Re352
Rolex Explorer II scat/gar art. Re352
AU$ 6,659
Seller
Stroppiana SRL
226
IT
Rolex Explorer II White dial Stainless Steel GMT 216570 WSO
Rolex Explorer II White dial Stainless Steel GMT 216570 WSO
AU$ 9,995
Seller
Zaeger Pty Ltd
AU
Corum 895-931-06-0371-AN92
TOP
Corum 895-931-06-0371-AN92
AU$ 9,513
Seller
Deluxe ( Asia ) Ltd
16
HK
Rolex Vintage UAE Air Force Pepsi Bezel GMT-Master B&P 1675
Rolex Vintage UAE Air Force Pepsi Bezel GMT-Master B&P 1675
AU$ 172,083
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
89
UK
Rolex Datejust II 126334
Rolex Datejust II 126334
AU$ 13,080
Seller
Mall of the Watch
421
MC
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (1997)
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (1997)
AU$ 10,464
Seller
Kleen Edelmetalen
114
NL
Breitling Chronomat Windrider MOP Dial A13352
Breitling Chronomat Windrider MOP Dial A13352
AU$ 3,713
Seller
The Watch Culture
AU
Omega 23332412101001 Seamaster Spectre - James Bond Limited...
Omega 23332412101001 Seamaster Spectre - James Bond Limited...
AU$ 14,120
Free shipping
Seller
Watch Club
12
UK
Omega Seamaster Professional 300m Automatic - Midsize
Omega Seamaster Professional 300m Automatic - Midsize
AU$ 2,521
Seller
wagener-gold International e.K.
810
DE
Rolex submariner art. Rb639
Rolex submariner art. Rb639
AU$ 7,848
Seller
Stroppiana SRL
226
IT

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.