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Panerai Luminor Marina Automatic Steel 44MM, Full Set 2018
TOP
Panerai Luminor Marina Automatic Steel 44MM, Full Set 2018
4,650 
Free shipping
Seller
M.J.WATCHES
100
BE
Omega Seamaster 42mm | 300m Chronometer Blue Dial | 2255.80
TOP
Omega Seamaster 42mm | 300m Chronometer Blue Dial | 2255.80
2,331 
Seller
Freddie Keeble Watches & Diamonds
 
UK
Breitling 41 MOP 750 18K NP 45.900€
TOP
Breitling 41 MOP 750 18K NP 45.900€
18,750 
Seller
LUXUSUHREN-SICHERER-KAUFEN
56
ES
Rolex Daytona 116509 - Diamond Set - Serviced By Rolex
TOP
Rolex Daytona 116509 - Diamond Set - Serviced By Rolex
27,292 
Seller
Mark Worthington Jewellers
65
UK
Breitling Chronomat 44 Like New 2017 5Y-Warranty
TOP
Breitling Chronomat 44 Like New 2017 5Y-Warranty
5,800 
Free shipping
Seller
Tradeluxe Uhrenhandels GmbH
42
AT
Breitling Navitimer 01 DC-3 (Limited Edition)
TOP
Breitling Navitimer 01 DC-3 (Limited Edition)
7,900 
Free shipping
Seller
Istock LTD
58
LV
Rolex Deep Sea PEPSI - ICE - Baguette Bezel Diamonds  ICED OUT
TOP
Rolex Deep Sea PEPSI - ICE - Baguette Bezel Diamonds ICED OUT
26,000 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Rolex Gmt-Master II LN 18K Yellow Gold
TOP
Rolex Gmt-Master II LN 18K Yellow Gold
20,500 
Seller
Juwelier Burger, since 2001
574
NL
Breitling Avenger Seawolf
TOP
Breitling Avenger Seawolf
2,300 
Seller
Colombo's Watches
93
ES
Omega Seamaster Diver 300 – Commander’s Watch Limited Edition...
TOP
Omega Seamaster Diver 300 – Commander’s Watch Limited Edition...
4,200 
Seller
Mall of the Watch
577
MC
Tudor Heritage Black Bay Automatik Dark 79230DK Lederband
TOP
Tudor Heritage Black Bay Automatik Dark 79230DK Lederband
2,840 
Seller
Uhren2000 GmbH
301
DE
Omega Seamaster Aqua Terra 150M Master Co-Axial 43 MM Ref....
TOP
Omega Seamaster Aqua Terra 150M Master Co-Axial 43 MM Ref....
4,453 
Seller
WINGOO WATCHES
453
IT
Blancpain MINT Blancpain Leman Chronograph 2185-1418-53 White...
Blancpain MINT Blancpain Leman Chronograph 2185-1418-53 White...
7,331 
Seller
Collectors Coins & Jewelry
5
US
Rolex GMT Master II.  16710-T.  Box & Documens.
TOP
Rolex GMT Master II. 16710-T. Box & Documens.
8,900 
Free shipping
Seller
WatchesNorte
35
ES
Vacheron Constantin Overseas Chronograph (Limited Edition)
TOP
Vacheron Constantin Overseas Chronograph (Limited Edition)
14,500 
Free shipping
Seller
Istock LTD
58
LV
Rolex Deep Sea Black Dia  Baguette Lünette Pave Dial PIECE UNIQUE
TOP
Rolex Deep Sea Black Dia Baguette Lünette Pave Dial PIECE UNIQUE
13,900 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Rolex Submariner Date Full Diamonds
TOP
Rolex Submariner Date Full Diamonds
27,900 
Seller
Juwelier Burger, since 2001
574
NL
Omega Speedmaster Moonwatch Co-Axial Master Chronometer...
TOP
Omega Speedmaster Moonwatch Co-Axial Master Chronometer...
6,730 
Seller
Montredo GmbH
442
DE
Louis Chevrolet Swiss Watches Chrono-Tour Classic
Louis Chevrolet Swiss Watches Chrono-Tour Classic
1,693 
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Chopard L.U.C. Lunar Big Date 18kt. Rosegold Mondphase Automatic
TOP
Chopard L.U.C. Lunar Big Date 18kt. Rosegold Mondphase Automatic
14,890 
Seller
Marks Uhren GmbH
7
DE
TAG Heuer Chronometer officially certified
TOP
TAG Heuer Chronometer officially certified
7,500 
Seller
Reclaimed Jewels
11
NL
Omega RARE 1962 Omega Constellation Tiffany Pie Pan 14K Yellow...
Omega RARE 1962 Omega Constellation Tiffany Pie Pan 14K Yellow...
4,166 
Seller
Collectors Coins & Jewelry
5
US
Rolex Daytona
Rolex Daytona
13,200 
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
131
DE
Zenith El Primero Skeleton Tribute To Rolling Stones
TOP
Zenith El Primero Skeleton Tribute To Rolling Stones
8,300 
Free shipping
Seller
Istock LTD
58
LV
Rolex Datejust II Rhodium Dial Weissgold Baguette Brillant...
TOP
Rolex Datejust II Rhodium Dial Weissgold Baguette Brillant...
12,600 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Panerai Luminor 1950 Chrono Monopulsante 8 Days GMT Ceramica
TOP
Panerai Luminor 1950 Chrono Monopulsante 8 Days GMT Ceramica
13,350 
Seller
Juwelier Burger, since 2001
574
NL
Omega Seamaster Planet Ocean Co-Axial Master Chronometer 44 Date
TOP
Omega Seamaster Planet Ocean Co-Axial Master Chronometer 44 Date
4,120 
Seller
Montredo GmbH
442
DE
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
4,950 
Seller
Matthias Wohne Uhrmachermeister
6
DE
Montblanc Timewalker
Montblanc Timewalker
4,695 
Seller
Handelshaus Rheinländer
 
DE
Breitling Avenger II GMT Black PVD Steel 43mm M3239010/BF04...
Breitling Avenger II GMT Black PVD Steel 43mm M3239010/BF04...
2,377 
Seller
Alux Watches
 
US
Rolex Men's Rolex Submariner Date 16613 Two-Tone Gold Blue...
Rolex Men's Rolex Submariner Date 16613 Two-Tone Gold Blue...
5,917 
Seller
Collectors Coins & Jewelry
5
US
Rolex Datejust
Rolex Datejust
3,700 
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
131
DE
Jaeger-LeCoultre Geophysic Universal Time Rose Gold
TOP
Jaeger-LeCoultre Geophysic Universal Time Rose Gold
17,520 
Free shipping
Seller
Istock LTD
58
LV
Rolex Lady Datejust Black Roman Diamond Bezel Sonnenschliff LC100
TOP
Rolex Lady Datejust Black Roman Diamond Bezel Sonnenschliff LC100
7,500 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Rolex Day-Date Tridor Masterpiece Meteorite Diamond Dial
TOP
Rolex Day-Date Tridor Masterpiece Meteorite Diamond Dial
39,500 
Seller
Juwelier Burger, since 2001
574
NL
Breitling Navitimer World 46 Chronograph Blue Dial Blue...
TOP
Breitling Navitimer World 46 Chronograph Blue Dial Blue...
4,280 
Seller
Montredo GmbH
442
DE
Omega De Ville Hour Vision
Omega De Ville Hour Vision
12,000 
Seller
Sfera GmbH
 
AT
Rolex  Daytona Ref/116520 DLC Skeleton MAD
Rolex Daytona Ref/116520 DLC Skeleton MAD
24,900 
Seller
WMC
 
FR
Omega Speedmaster Mark II Co-Axial Chronograph
Omega Speedmaster Mark II Co-Axial Chronograph
3,147 
Seller
Horology 411
 
US
Rolex 2018  Rolex Oyster Perpetual 39mm Blue Green Stainless...
Rolex 2018 Rolex Oyster Perpetual 39mm Blue Green Stainless...
4,635 
Seller
Collectors Coins & Jewelry
5
US
Rolex Submariner
Rolex Submariner
10,000 
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
131
DE
Ulysse Nardin Marine Regatta Chronograph Blue
TOP
Ulysse Nardin Marine Regatta Chronograph Blue
11,250 
Free shipping
Seller
Istock LTD
58
LV
Rolex DATEJUST II Pavee Dial Brillant Lünette
TOP
Rolex DATEJUST II Pavee Dial Brillant Lünette
11,600 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
9,700 
Seller
Soprana dal 1910 srl
 
IT
Omega Speedmaster Moonwatch 44 Co-Axial Chronograph Moonphase
TOP
Omega Speedmaster Moonwatch 44 Co-Axial Chronograph Moonphase
6,870 
Seller
Montredo GmbH
442
DE
Breitling Superocean II Chronograph
Breitling Superocean II Chronograph
3,900 
Seller
Juwelier Vogl GmbH
 
DE
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
1,693 
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Omega Speedmaster Day Date
Omega Speedmaster Day Date
4,400 
Seller
Terzian Garo & Sia OE
 
GR
Rolex Vintage 1980 Rolex Submariner Date Matte Patina 16800...
Rolex Vintage 1980 Rolex Submariner Date Matte Patina 16800...
8,257 
Seller
Collectors Coins & Jewelry
5
US
Breitling Superocean  42
Breitling Superocean 42
2,200 
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
131
DE
Blancpain L-Evolution Chrono Flyback Super Trofeo (Limited...
TOP
Blancpain L-Evolution Chrono Flyback Super Trofeo (Limited...
13,200 
Free shipping
Seller
Istock LTD
58
LV
Breitling Bentley GMT Midnight Carbon Diamond Limited 100...
TOP
Breitling Bentley GMT Midnight Carbon Diamond Limited 100...
11,900 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Omega Constellation Co-Axial 35mm
Omega Constellation Co-Axial 35mm
2,300 
Seller
Soprana dal 1910 srl
 
IT
Breitling Avenger Blackbird 44 Date Chronometer
TOP
Breitling Avenger Blackbird 44 Date Chronometer
3,270 
Seller
Montredo GmbH
442
DE
Rolex Sea-Dweller
Rolex Sea-Dweller
6,584 
Seller
A. W. Porter & Son Ltd
 
UK
Louis Chevrolet Swiss Watches LC-01 Classic
Louis Chevrolet Swiss Watches LC-01 Classic
846 
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
2,502 
Seller
Alux Watches
 
US
Rolex 1972 Rolex Day-Date President 36mm 1803 18K Yellow Gold...
Rolex 1972 Rolex Day-Date President 36mm 1803 18K Yellow Gold...
7,502 
Seller
Collectors Coins & Jewelry
5
US
Breitling Superocean Heritage 46
Breitling Superocean Heritage 46
2,800 
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
131
DE
Omega Seamaster Planet Ocean 600 m Co-Axial Chronograph 45.5mm
TOP
Omega Seamaster Planet Ocean 600 m Co-Axial Chronograph 45.5mm
24,400 
Free shipping
Seller
Istock LTD
58
LV
Rolex Milgauss Green Baguette Diamond + Green Glas Piece Unique
TOP
Rolex Milgauss Green Baguette Diamond + Green Glas Piece Unique
7,950 
Seller
LUXUS RITTER GmbH & Co. KG
66
DE
Rolex Day-Date Borke Ref. 18078 Bj.1983 LC100 +Papiere+Brillia...
Rolex Day-Date Borke Ref. 18078 Bj.1983 LC100 +Papiere+Brillia...
11,000 
Seller
Uhren - Borgardts
 
DE
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
2,450 
Seller
Classic Watch
12
DE
Tissot Powermatic 80 Automatik Chronometer COSC  new&unworn
TOP
Tissot Powermatic 80 Automatik Chronometer COSC new&unworn
850 
Seller
T&N "Glücksschmiede" GmbH
603
DE
Breitling Superocean 42
Breitling Superocean 42
2,000 
Seller
Sfera GmbH
 
AT
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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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