Log in
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...
Clasp
More...
Lug width
More...
Bracelet color
More...
Clasp material
More...
Save this search Cancel

View

Sort by

TOP
Omega Speedmaster Racing Co-Axial Chronograph Stainless Steel...
$3,149
Free shipping
Verified Dealer
1165
US
TOP
Chopard Mille Miglia Gts Power Control Automatic Black Dial...
$4,739
Free shipping
Verified Dealer
1165
US
TOP
Rolex Submariner Date Reference 16610 T
$8,899
Verified Dealer
25
US
TOP
Omega Railmaster Omega Co-Axial Master Chronometer 38 / 60th...
$5,259
Free shipping
Verified Dealer
1165
US
TOP
Omega Speedmaster Apollo 11 50th Anniversary 310.20.42.50.01.001
$14,500
Free shipping
Verified Dealer
548
US
TOP
Omega Speedmaster Dark Side of the Moon - DSOM - 5 Year Warranty
$8,100
Verified Dealer
223
US
Ulysse Nardin Maxi Marine Diver Titanium Ceramic Inserts &...
$5,900
Free shipping
Verified Dealer
20
US
TOP
Ulysse Nardin : GMT± Perpetual : 320-60/60 : 18k White Gold
$16,430
Verified Dealer
396
US
TOP
Ulysse Nardin Perpetual Manufacture 43mm - Limited Edition
$29,980
Free shipping
Verified Dealer
304
US
Breitling Navitimer World
$4,150
Verified Dealer
5
US
Rolex Day Date President
$14,150
Verified Dealer
75
US
TOP
Omega Co-Axial Master Chronometer Blue/Steel 42mm - 210.30.4
$4,089
Free shipping
Verified Dealer
1165
US
Rolex Sea-Dweller
$13,900
Free shipping
Verified Dealer
104
US
Rolex 116622 Yacht Master SS Blue Dial / Platinum Bezel (32192)
$12,500
Verified Dealer
329
US
TOP
TAG Heuer Grand Carrera
$2,625
Verified Dealer
30
US
Rolex Datejust 31mm White Gold 178279 Silver Dia Dial President
$23,000
Free shipping
Verified Dealer
20
US
TOP
Rolex Oyster Perpetual Day-Date President 18038 Mens Watch
$10,999
Free shipping
Verified Dealer
266
US
Breitling Avenger Blackbird 44
$2,800
Verified Dealer
 
US
Omega Seamaster
$3,495
Verified Dealer
5
US
Rolex President Day-Date
$21,950
Verified Dealer
75
US
Rolex Cellini Moonphase Automatic 39mm Ref. 50535 18k Rose...
$19,995
Free shipping
Verified Dealer
82
US
Rolex Mens Rolex Sky Dweller 18K Everose Gold 326935 42MM VS...
$65,000
Verified Dealer
24
US
Omega 311.10.39.30.01.002 1957 Trilogy Set Limited Edition 3...
$19,500
Verified Dealer
329
US
Omega Seamaster Planet Ocean
$4,300
Free shipping
Verified Dealer
104
US
Rolex Datejust 41 126334 “NEW”
$11,350
Verified Dealer
133
US
TOP
Rolex Datejust 41mm Black Dial with diamond
$9,200
Private Seller
 
US
Omega Seamaster Planet Ocean Chronograph
$4,800
Verified Dealer
 
US
TOP
Rolex Explorer II 216570 Men Watch
$7,999
Free shipping
Verified Dealer
266
US
Rolex Submariner Steel & 18K Gold
$12,350
Verified Dealer
75
US
Omega Speedmaster "Dark Side of the Moon" 311.92.44.51.01.005
$8,450
Free shipping
Verified Dealer
560
US
Rolex Sky Dweller Stainless Steel 326934 42MM VS Baguette...
$60,000
Verified Dealer
24
US
Rolex 116610LV Submariner Green Ceramic Bezel Green Dial SS...
$16,250
Verified Dealer
329
US
TOP
Jaeger-LeCoultre JLC Reverso Duo Day Night 26mm Silver...
$6,493
Free shipping
Verified Dealer
265
US
Breitling Bandit Avenger Titanium Slate Gray Dial 100% NIB US...
$3,399
Verified Dealer
37
US
Rolex Datejust 41mm Stainless Steel Blue Diamond Dial Watch...
$10,499
Free shipping
Verified Dealer
182
US
Breitling Chronomat 41
$4,500
Verified Dealer
 
US
TOP
Omega Seamaster 2209.50.00 Mens Watch Box Papers
$3,699
Free shipping
Verified Dealer
266
US
Rolex President Day-Date
$16,150
Verified Dealer
75
US
Omega Seamaster 300 Professional Limited "Spectre"James Bond
$8,997
Free shipping
Verified Dealer
22
US
Rolex Sky Dweller 18K Yellow Gold 326938 42MM VVS Full Diamond...
$85,000
Verified Dealer
24
US
Rolex 114200 Oyster Perpetual Olive Green Dial SS (31936)
$5,250
Verified Dealer
329
US
Breitling Superocean II A17312C9/BD91
$2,450
Free shipping
Verified Dealer
560
US
TOP
Omega Speedmaster Racing Chronograph Automatic Men's Watch...
$2,819
Free shipping
Verified Dealer
331
US
Rolex Sea-Dweller 50th Year Anniversary 126600 FULL STICKERS
$14,749
Verified Dealer
133
US
Rolex Submariner Date Black Ceramic
$9,541
Verified Dealer
1129
NL
TOP
Rolex Oyster Perpetual Date 15200 Mens Watch Box Papers
$3,999
Free shipping
Verified Dealer
266
US
Rolex Datejust II 116333
$9,950
Verified Dealer
75
US
TAG Heuer Grand Carrera
$1,800
Verified Dealer
 
US
Rolex Mens 18K Yellow Gold 326938 Rolex Sky Dweller 45mm VS...
$79,000
Verified Dealer
24
US
Rolex 326934 Sky Dweller Steel Blue SS / SS UNWORN & STICKERED...
$24,900
Verified Dealer
329
US
Ulysse Nardin Marine Chronometer 1186-126-3/63
$14,950
Free shipping
Verified Dealer
560
US
Rolex Daytona Platinum Diamond 40mm Watch 116576TBR
$159,999
Free shipping
Verified Dealer
182
US
TOP
Rolex Datejust 116203
$8,200
Free shipping
Verified Dealer
44
US
Rolex GMT-Master - Radial Mark 3 (III) Mk3 MkIII Serviced
$27,772
Verified Dealer
5
US
Rolex Sea-Dweller
$14,000
Free shipping
Verified Dealer
104
US
Rolex Two Tone GMT Master II
$11,850
Verified Dealer
75
US
Omega Constellation Double Eagle
$3,000
Verified Dealer
 
US
Rolex Sky Dweller 45mm VS Diamond Watch 26.5 Ct
$63,000
Verified Dealer
24
US
Rolex 16520 Daytona Zenith Movement White Dial SS (31994)
$25,500
Verified Dealer
329
US
Omega Speedmaster Racing Chronograph 329.33.44.51.01.001
$4,950
Free shipping
Verified Dealer
560
US
Rolex Datejust 41 126334 New
$9,850
Verified Dealer
133
US
TOP
Omega Speedmaster Moonwatch Blue Dial Chronograph Men's Watch...
$6,575
Free shipping
Verified Dealer
331
US
Ulysse Nardin Maxi Marine Chronometer Manufacturer 45mm Black...
$5,999
Verified Dealer
37
US
Rolex Datejust 126334 Black Dial Jubilee Bracelet 41mm White...
$8,849
Verified Dealer
50
US
  • 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.