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Longines Record L23204966 New Steel 26.00mm Automatic
Promoted
Longines Record
L23204966 - Record Automatic Ladies Watch
C$2,026
+ C$111 for shipping
Rolex Oyster Perpetual 31 277200 Unworn Steel 31mm Automatic
Promoted
Rolex Oyster Perpetual 31
Silver Dial 2022 Unworn 277200 Complete
C$12,320
+ C$252 for shipping
Rolex Submariner Date 126610LN Unworn Steel 41mm Automatic
Promoted
Rolex Submariner Date
2022 Submariner Date 41mm 126610LN Black Ceramic Bezel Black Dial Stainless Steel
C$22,140
+ C$111 for shipping
Omega Speedmaster Racing 329.32.44.51.01.001 Very good Steel 44.2mm Automatic
Promoted
Omega Speedmaster Racing
329.32.44.51.01.001
C$9,856
+ C$139 for shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic Canada, Abbotsford
Rolex Datejust 41
126334
C$19,000
Free shipping
Rolex Datejust 41 126334 Unworn White gold 41mm Automatic
Promoted
Rolex Datejust 41
2022 Datejust 41 “Mint Green” Jubliee 126334 Stainless Steel Unworn In Stock
C$26,040
Free shipping
Rolex Submariner Date 126610LN New Steel 41mm Automatic
Promoted
Rolex Submariner Date
NEW 2022 Submariner Date 41mm
C$21,822
+ C$196 for shipping
Rolex Submariner (No Date) 124060 Unworn Steel 41mm Automatic
Promoted
Rolex Submariner (No Date)
124060 Oyster No Date Steel Black Dial
C$20,977
Free shipping
Rolex Submariner Date 126610LN Very good Steel 41mm Automatic
Promoted
Rolex Submariner Date
41mm 126610LN Pre-Owned
C$19,352
+ C$563 for shipping
Omega Speedmaster Professional Moonwatch 310.30.42.50.01.001 New Steel 42mm Manual winding
Promoted
Omega Speedmaster Professional Moonwatch
Hesalite Co-Axial Chronograph (2022)
C$7,990
+ C$139 for shipping
Omega Seamaster Planet Ocean Chronograph 215.33.46.51.03.001 Good Steel 45.5mm Automatic
Promoted
Omega Seamaster Planet Ocean Chronograph
600M Co-Axial Master Chronograph 45.4 MM Blue Dial
C$8,446
+ C$139 for shipping
Omega Speedmaster Professional Moonwatch 310.20.42.50.01.001 Very good Gold/Steel 42mm Manual winding
Promoted
Omega Speedmaster Professional Moonwatch
Apollo 11 50th Anniversary 310.20.42.50.01.001 B&P
C$20,690
+ C$220 for shipping
Omega Seamaster 300 233.30.41.21.01.001 Very good Steel 41mm Automatic Canada, Vancouver
Omega Seamaster 300
Master Co-Axial Chronometer 233.30.41.21.01.001
C$5,895
+ C$30 for shipping
Omega Seamaster Planet Ocean Chronograph 215.92.46.51.01.001 Unworn Ceramic 45.5mm Automatic Canada, Abbotsford
Omega Seamaster Planet Ocean Chronograph
215.92.46.51.01.001
C$13,000
Free shipping
Rolex Datejust 41 126334 Very good Steel 41mm Automatic
Promoted
Rolex Datejust 41
2022 Datejust 41 “Blue Index Dial" 126334 Jubilee Bracelet 18k Fluted Bezel “In Stock”
C$19,704
Free shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2022 Datejust 41 BLUE ROMAN
C$18,867
+ C$196 for shipping
Rolex Datejust 41 126334 Steel 41mm Automatic
Promoted
Rolex Datejust 41
126334 Jubilee Steel Blue Roman Dial
C$22,526
Free shipping
Rolex Submariner Date 126610LN New Steel 41mm Automatic
Rolex Submariner Date
126610LN
C$23,513
+ C$211 for shipping
Rolex Sea-Dweller 126600 Unworn Steel 43mm Automatic
Promoted
Rolex Sea-Dweller
43mm MK1 2017
C$24,482
+ C$448 for shipping
Rolex Day-Date 36 118135 Very good Rose gold 36mm Automatic
Rolex Day-Date 36
18k Rose Gold Spanish Date Disk Brown Dial
C$33,774
+ C$111 for shipping
Omega Seamaster Diver 300 M 2252.50.00 Very good Steel 36.2mm Automatic
Promoted
Omega Seamaster Diver 300 M
Chronometer Automatik Edelstahl Herrenuhr Ref. 2252.50.00
C$3,093
+ C$115 for shipping
Omega Constellation 131.23.41.21.03.001 Very good Gold/Steel 41mm Automatic Canada, Vancouver
Omega Constellation
Co-Axial Master Chronometer 131.23.41.21.03.001
C$9,150
+ C$30 for shipping
Omega Seamaster Aqua Terra 220.23.41.21.02.001 Unworn Gold/Steel 41mm Automatic Canada, Abbotsford
Omega Seamaster Aqua Terra
220.23.41.21.02.001
C$9,000
Free shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
2022 Datejust 41 'White Roman Dial' 126334 Jubilee Bracelet “In Stock”
C$19,986
Free shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2022 Datejust 41 GREEN
C$24,991
+ C$196 for shipping
Rolex Submariner Date 126610LN Unworn Steel 41mm Automatic
Promoted
Rolex Submariner Date
126610LN Oyster Steel Black Index Dial
C$23,230
Free shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Rolex Datejust 41
126334
C$20,134
+ C$211 for shipping
Tudor Black Bay 41 79540 Very good Steel 41mm Automatic Canada, Arnprior
Promoted
Tudor Black Bay 41
79540
C$3,600
Excl. shipping
Private Seller
Rolex Submariner (No Date) 124060 New Steel 41mm Automatic
Promoted
Rolex Submariner (No Date)
124060
C$19,006
+ C$111 for shipping
Omega De Ville Co-Axial 168.1700 Very good Steel 37.5mm Automatic
Promoted
Omega De Ville Co-Axial
Chronometer Automatik Edelstahl Herrenuhr Ref. 168.1700
C$3,506
+ C$124 for shipping

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Breitling Chronomat GMT MB0410 Very good Steel 47mm Automatic Canada, Vancouver
Breitling Chronomat GMT
PVD Chronomat GMT Jet Team American Tour MB0410
C$7,495
+ C$30 for shipping
Rolex Sea-Dweller 126600 Unworn Steel 43mm Automatic Canada, Abbotsford
Rolex Sea-Dweller
126600
C$22,500
Free shipping
Rolex Datejust 41 126331-0008 Very good Gold/Steel 41mm Automatic
Promoted
Rolex Datejust 41
2021 Datejust 41 'MOP Diamond Dial' 126331 18k RG/SS Jubilee Bracelet “In-Stock”
C$26,744
Free shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2022 Datejust 41 WIMBELDON JUBILEE
C$22,175
+ C$196 for shipping
Rolex Datejust 41 126334 Steel 41mm Automatic
Promoted
Rolex Datejust 41
126334 Oyster Steel Black Diamond Dial
C$23,934
Free shipping
Breitling Endurance Pro X82310D91B1S1 New Plastic 44mm Quartz
Promoted
Breitling Endurance Pro
B82 Super Quartz Chronograph Red (2022)
C$3,800
+ C$139 for shipping
Breitling Navitimer World A24322 Very good Steel 46mm Automatic Canada, Quebec
Promoted
Breitling Navitimer World
46 mm Black Dial
C$7,672
Excl. shipping
Private Seller
Rolex Submariner Date 16613LN Good Steel 40mm Automatic
Rolex Submariner Date
Two Tone Black Dial 16613LN "No Holes" 2004
C$22,105
+ C$111 for shipping
Omega Seamaster Diver 300 M 2252.50.00 Very good Steel 36.2mm Automatic
Promoted
Omega Seamaster Diver 300 M
Chronometer Automatik Stahl Herrenuhr 2252.50.00 Papiere
C$3,506
+ C$124 for shipping
Omega Seamaster 300 234.30.41.21.01.001 Very good Steel 41mm Automatic
Promoted
Omega Seamaster 300
2022 Seamaster 300 41mm Black Box/Papers/Card 234.30.41.21.01.001
C$7,885
Free shipping
Omega Seamaster Diver 300 M 210.30.42.20.01.002 Unworn Steel 42mm Automatic Canada, Abbotsford
Omega Seamaster Diver 300 M
Co-axial Master Chronometer
C$7,500
Free shipping
Omega Seamaster Diver 300 M 210.30.42.20.03.001 Unworn Steel 42mm Automatic
Promoted
Omega Seamaster Diver 300 M
Grey Dial In-Stock
C$7,033
Free shipping
Rolex Datejust 41 126334 New White gold 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2022 Datejust 41 BLUE ROMAN
C$19,923
+ C$196 for shipping
Rolex Datejust 41 126334 Unworn White gold 41mm
Promoted
Rolex Datejust 41
126334 Stainless Steel Rhodium Diamond Dial
C$20,977
Free shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Rolex Datejust 41
126334 Blue Diamonds 2022 Jubilee
C$23,230
+ C$139 for shipping
Rolex GMT-Master II 126720VTNR New Steel 40mm Automatic
Rolex GMT-Master II
126720VTNR 2022 Lefty Sprite Oyster Complete Set
C$51,390
Free shipping
Omega Seamaster Planet Ocean 215.90.44.21.99.001 Very good Titanium 43.5mm Automatic
Omega Seamaster Planet Ocean
215.90.44.21.99.001
C$9,645
+ C$211 for shipping
Omega Seamaster Aqua Terra 231.10.42.21.03.003 Very good Steel 41.5mm Automatic
Promoted
Omega Seamaster Aqua Terra
150M Master Co-Axial Stahl 231.10.42.21.03.003 B&P
C$6,392
+ C$124 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Rolex Datejust 41
41mm Fluted Black Stick Dial Jubilee 126334 2022
C$20,831
+ C$111 for shipping
Omega Constellation 168.025 Good Steel 34mm Automatic
Omega Constellation
Pie Pan Constellation
C$9,715
+ C$111 for shipping
Rolex Datejust 41 126334 Very good Steel 41mm Automatic
Promoted
Rolex Datejust 41
2022 Datejust 41 'Slate Diamond Dial' 126334 Jubilee Bracelet Box & Card “In Stock”
C$20,831
Free shipping
Rolex Daytona New Steel 40mm Automatic
Promoted
Rolex Daytona
NEW APRIL 2022 Rolex Daytona Cosmograph Black Steel Chronograph Watch 116500 LN
C$45,469
+ C$703 for shipping
Rolex Datejust 41 126334 Steel 41mm Automatic
Promoted
Rolex Datejust 41
126334 Jubilee Steel Rhodium Diamond Dial
C$24,638
Free shipping
Rolex Submariner (No Date) 124060 New Steel 41mm Automatic
Rolex Submariner (No Date)
124060 No Date 2022
C$19,147
+ C$139 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Rolex Datejust 41
mm Stainless Steel Jubilee Wimbledon Silver Dial Full Set
C$25,202
Free shipping
Tudor Black Bay 79230R-0003 Unworn Steel 41mm Automatic
Tudor Black Bay
79230R-0003
C$5,280
+ C$211 for shipping
Omega Speedmaster Professional Moonwatch 311.92.44.51.01.003 Very good Ceramic 44.2mm Automatic
Promoted
Omega Speedmaster Professional Moonwatch
Dark Side Of The Moon Co-Axial 311.92.44.51.01.003
C$10,517
+ C$220 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Rolex Datejust 41
41mm Fluted Blue Stick Dial Oyster 126334 2022
C$20,831
+ C$111 for shipping
Breitling Avenger A13385101B1A1 New Steel 43mm Automatic
Promoted
Breitling Avenger
CHRONOGRAPH43 A13385101B1A1
C$6,413
Free shipping
Omega Speedmaster Professional Moonwatch 310.32.42.50.01.002 Very good Steel 42mm Manual winding
Promoted
Omega Speedmaster Professional Moonwatch
Co-axial Master Chronometer Chronograph “In Stock”
C$9,285
Free shipping
Rolex Sea-Dweller 126600 Very good Steel 43mm Automatic
Rolex Sea-Dweller
43mm SD43 2019 Steel Diver Ceramic Excellent Condition 126600
C$20,556
+ C$211 for shipping
Rolex Cellini Dual Time 50529 White gold 39mm Automatic
Promoted
Rolex Cellini Dual Time
50529 Dual Time 18K White Gold Black Dial
C$28,158
Free shipping
Rolex Submariner Date 126610LN New Steel 41mm Automatic
Rolex Submariner Date
41mm 126610LN 2022
C$21,822
+ C$139 for shipping

Performance of a Similar Model

Rolex Datejust 41
126334 ()
Case material
Steel
Dial
White







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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.