Brand
Model
Price
Case diameter
Year
Location
More
Your selection
Clear selection

Your selection
Clear selection

Your selection
Clear selection

Sorry, your search did not match any items

Your selection
Clear selection

Sorry, your search did not match any items

Your selection
Clear selection

Sorry, your search did not match any items

Basic information
Type of watch
Categories
More...
Reference number
More...
New/Pre-owned
Offer type
Gender
Availability
Condition
More...
Scope of delivery
Characteristics & functions
Movement
Case material
More...
Dial
More...
Glass
More...
Functions
More...
Thickness
More...
Bezel material
More...
Dial numerals
Water resistance
More...
Others
Bracelet/strap
Bracelet material
More...
Lug width
More...
Bracelet color
More...
Clasp material
More...
Save this search Cancel

View

Sort by

Franck Muller 18Kt Perpetual Calendar Moon folding closure
TOP
Franck Muller 18Kt Perpetual Calendar Moon folding closure
R 247,722
Seller
Ingo Freiherr von Seld
9
DE
Rolex Pearlmaster Datejust Tridor 80298
TOP
Rolex Pearlmaster Datejust Tridor 80298
R 277,858
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Rolex Datejust Edelstahl/ Gelbgold Oysterarmband Automatic...
TOP
Rolex Datejust Edelstahl/ Gelbgold Oysterarmband Automatic...
R 61,842
Seller
Timeless Watches GmbH
229
DE
TAG Heuer Grand Carrera
TAG Heuer Grand Carrera
R 27,500
Seller
Private Seller
ZA
Rolex Ladies Oyster Perpetual Caramel 18K Solid Gold - Case 31mm
TOP
Rolex Ladies Oyster Perpetual Caramel 18K Solid Gold - Case 31mm
R 100,914
Free shipping
Seller
Pawndeluxe
167
NL
Omega Seamaster Diver 300 M
TOP
Omega Seamaster Diver 300 M
R 40,000
Seller
Private Seller
ZA
Omega CONSTELLATION DOUBLE EAGLE CHRONOMETER DIAMONDS LADY LADIES
TOP
Omega CONSTELLATION DOUBLE EAGLE CHRONOMETER DIAMONDS LADY LADIES
R 123,562
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
R 186,040
Seller
Plus Watch - Luxury Watches
2923
IT
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
R 43,413
Seller
Classic Watch
20
DE
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
TOP
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
R 1,098,626
Seller
MMC RIVIERA
6
MC
Breitling Colt Chronograph Box&Papers/2005, Steel Quartz MINT
TOP
Breitling Colt Chronograph Box&Papers/2005, Steel Quartz MINT
R 23,036
Seller
M.J.WATCHES
148
BE
Rolex Lady Datejust Lapis 18K GOLD GELBGOLD DAMENUHR
TOP
Rolex Lady Datejust Lapis 18K GOLD GELBGOLD DAMENUHR
R 115,001
Seller
Timeless Watches GmbH
229
DE
Breitling Chronomat Evolution Men's Watch
Breitling Chronomat Evolution Men's Watch
R 51,900
Seller
Luxurytime South Africa
ZA
Gérald Genta Sport Retro Steel & Rubber Full Set Box + Papers
TOP
Gérald Genta Sport Retro Steel & Rubber Full Set Box + Papers
R 38,540
Free shipping
Seller
Pawndeluxe
167
NL
Omega DeVille Ladymatic 425.60.34.20.51.002 Ladies Watch
TOP
Omega DeVille Ladymatic 425.60.34.20.51.002 Ladies Watch
R 136,326
Free shipping
Seller
AB Time Inc.
154
US
Breitling CHRONO-MATIC 24H CHRONOGRAPHE CHRONOMETER LIMITED...
TOP
Breitling CHRONO-MATIC 24H CHRONOGRAPHE CHRONOMETER LIMITED...
R 168,143
Seller
A.S. INVESTMENTS SP. Z O.O.
125
PL
Panerai Special Editions
Panerai Special Editions
R 179,000
Seller
Topwatch SA Pty Ltd
ZA
Rolex “Four-Line” “Zenith” Daytona Ref. 16520 in Steel
Auction
Rolex “Four-Line” “Zenith” Daytona Ref. 16520 in Steel
R 272,682
Estimated price
Seller
Fortuna
 
Rolex GMT-Master Vintage UAE Air Force 1675
Rolex GMT-Master Vintage UAE Air Force 1675
R 1,892,222
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Ulysse Nardin El Toro / Black Toro, Perpetual Calendar, GMT,...
Ulysse Nardin El Toro / Black Toro, Perpetual Calendar, GMT,...
R 362,432
Seller
Horlogerie Desbiolles
 
CH
Wempe Zeitmeister Vollkalender Chronograph
Wempe Zeitmeister Vollkalender Chronograph
R 38,983
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
249
DE
Omega Seamaster Aqua Terra
Omega Seamaster Aqua Terra
R 43,900
Seller
Luxurytime South Africa
ZA
Rolex Datejust II Diamond Sundust Dial Jubilee Rose Gold
Rolex Datejust II Diamond Sundust Dial Jubilee Rose Gold
R 191,407
Seller
Ahead Of Time Sunny Isles LLC
7
US
Rolex Datejust 16620 Jubileeband Edelstahl silber römsich
Rolex Datejust 16620 Jubileeband Edelstahl silber römsich
R 69,993
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Ulysse Nardin ACQUA PERPETUAL CALENDAR MARINE DIVER 300M
TOP
Ulysse Nardin ACQUA PERPETUAL CALENDAR MARINE DIVER 300M
R 142,103
Seller
A.S. INVESTMENTS SP. Z O.O.
125
PL
Chopard Mille Miglia 8920 Brescia-Roma-Brescia
Chopard Mille Miglia 8920 Brescia-Roma-Brescia
R 37,034
Seller
Krono Time
 
RO
Rolex Explorer II Ref. 16550 in Steel
Auction
Rolex Explorer II Ref. 16550 in Steel
R 90,894
Estimated price
Seller
Fortuna
 
Rolex Daytona Platinum 116506
Rolex Daytona Platinum 116506
R 826,602
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Omega Speedmaster Professional Moonwatch Ref 311.33.44.51.01.001
Omega Speedmaster Professional Moonwatch Ref 311.33.44.51.01.001
R 96,123
Seller
Horlogerie Desbiolles
 
CH
Rolex Datejust Turn-O-Graph
Rolex Datejust Turn-O-Graph
R 50,501
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
249
DE
Rolex Datejust 41mm  Navy Blue  Index Jubilee 126334
Rolex Datejust 41mm Navy Blue Index Jubilee 126334
R 139,143
Seller
Harley's Time LLC
156
US
Rolex Datejust 41 Blue Index
Rolex Datejust 41 Blue Index
R 136,341
Seller
Labelle Jewelry
46
US
Rolex Datejust 16233 36 mm Gold Stahl silber Zifferblatt
Rolex Datejust 16233 36 mm Gold Stahl silber Zifferblatt
R 84,169
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
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
R 42,527
Seller
Mall of the Watch
818
MC
Breitling Navitimer World A24322
Breitling Navitimer World A24322
R 79,562
Seller
Henry´s Auktionshaus AG
DE
Rolex Oyster Perpetual Ref. 1002 in Steel
Auction
Rolex Oyster Perpetual Ref. 1002 in Steel
R 22,723
Estimated price
Seller
Fortuna
 
Rolex Rare Tiffany & Co Explorer I 14270
Rolex Rare Tiffany & Co Explorer I 14270
R 328,649
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Breguet Transatlantique Type XX Ref.3800 39mm S/s Flyback
Breguet Transatlantique Type XX Ref.3800 39mm S/s Flyback
R 68,170
Seller
R&R Watches, Inc.
19
US
Rolex Daytona
Rolex Daytona
R 216,181
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
249
DE
Omega Seamaster 300 Black Steel 41mm - 233.30.41.21.01.001
Omega Seamaster 300 Black Steel 41mm - 233.30.41.21.01.001
R 62,793
Seller
Harley's Time LLC
156
US
Rolex Datejust 126334 Slate Roman
Rolex Datejust 126334 Slate Roman
R 137,856
Seller
Labelle Jewelry
46
US
Rolex Datejust 116200 Oysterband schwarz Index LC100
Rolex Datejust 116200 Oysterband schwarz Index LC100
R 93,029
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Omega Constellation Ladies
Omega Constellation Ladies
R 98,999
Seller
The Diamond Channel
ZA
Rolex Datejust Medium
Rolex Datejust Medium
R 52,982
Seller
Henry´s Auktionshaus AG
DE
Breitling Transocean Chronograph
Breitling Transocean Chronograph
R 219,548
Free shipping
Seller
David Celma
64
ES
Rolex Explorer I Unworn Steel 114270
Rolex Explorer I Unworn Steel 114270
R 138,431
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Rolex 116660 Sea Dweller Deep Sea (29188)
Rolex 116660 Sea Dweller Deep Sea (29188)
R 155,277
Seller
European Watch Company
159
US
Rolex Submariner
Rolex Submariner
R 316,298
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
249
DE
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
R 43,705
Seller
Harley's Time LLC
156
US
Omega Seamaster 300
Omega Seamaster 300
R 63,614
Seller
SW Watches
15
DE
Breitling Old Navitimer II Gold Stahl D13322
Breitling Old Navitimer II Gold Stahl D13322
R 55,817
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Rolex Lady Datejust Edelstahl 18K Gold Gelbgold Diamant Damenuhr
Rolex Lady Datejust Edelstahl 18K Gold Gelbgold Diamant Damenuhr
R 52,982
Seller
Timeless Watches GmbH
229
DE
Rolex Pearlmaster Diamonds Reference 69308
Rolex Pearlmaster Diamonds Reference 69308
R 317,184
Seller
Henry´s Auktionshaus AG
DE
Rolex Seadweller 126600 S/s 43mm Red Letter Diver. Unworn
Rolex Seadweller 126600 S/s 43mm Red Letter Diver. Unworn
R 217,388
Seller
R&R Watches, Inc.
19
US
Rolex Submariner Tropical 1680
Rolex Submariner Tropical 1680
R 587,585
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
221
UK
Breitling Navitimer 01 46mm
Breitling Navitimer 01 46mm
R 92,533
Seller
TIME TO LUXURY.
73
IT
Breitling Bentley Supersport
Breitling Bentley Supersport
R 77,967
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
249
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
R 43,705
Seller
Harley's Time LLC
156
US
Omega Seamaster Aqua Terra 150 M
Omega Seamaster Aqua Terra 150 M
R 52,982
Seller
SW Watches
15
DE
Omega Seamaster Railmaster Coaxial 42 mm 2500.5200
Omega Seamaster Railmaster Coaxial 42 mm 2500.5200
R 57,589
Seller
KLASSISCHE UHREN KRETZSCHMAR
23
DE
Rolex Datejust Edelstahl Automatic Herrenuhr
Rolex Datejust Edelstahl Automatic Herrenuhr
R 58,298
Seller
Timeless Watches GmbH
229
DE
Rolex Oyster Perpetual Medium Ref. 67488
Rolex Oyster Perpetual Medium Ref. 67488
R 150,441
Seller
Henry´s Auktionshaus AG
DE
  • 30
  • 60
  • 120

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.

You might also be interested in:

Do you have any questions?
We'd be glad to help.

+1 646-887-3560

Contact

?