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Urwerk UR-210 UR-210BPT Royal Hawk Very good Platinum 53.6mm Automatic
TOP
Urwerk UR-210 BPT Royal Hawk.
Php 6,472,232
Verified Dealer
13
US
Omega De Ville Hour Vision 433.33.41.22.03.001 New Steel 41mm Automatic
TOP
Omega De Ville Hour Vision
Php 404,127
Verified Dealer
22
IT
Omega Seamaster Diver 300 M 210.22.42.20.03.002 New Gold/Steel 42mm Automatic
TOP
Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm
Php 276,799
Free shipping
Verified Dealer
37
AU
Eberhard & Co. Tazio Nuvolari Eberhard & Co Tazio Nuvolari 31030 Movimento Gravè Oro New Steel 39.5mm Automatic
TOP
Eberhard & Co. [Rare] Tazio Nuvolari Gold Movement
Php 646,806
Verified Dealer
 
IT
Omega Constellation 167.005/6 Automatik Chronometer Very good Yellow gold 35mm Automatic
TOP
Omega Constellation 18K Gold Automatic Service 04/2020
Php 451,352
Verified Dealer
536
DE
Rolex Daytona 16523 Very good Gold/Steel 40mm Automatic
TOP
Rolex 2000 Rolex Daytona Zenith 40mm INVERTED 6 SIX Diamond...
Php 683,105
Verified Dealer
541
US
Rolex Very good Gold/Steel 32mm Automatic
TOP
Rolex Men's Rolex Oyster Perpetual Ref.3372 32mm 18k & ss...
Php 253,712
Free shipping
Verified Dealer
679
US
Omega Speedmaster HB-SIA 321.92.44.52.01.001 Very good Titanium 44,2mm Automatic
TOP
Omega Speedmaster HB-SIA Co-Axial GMT [SPECIAL OFFER]
Php 277,929
Verified Dealer
1536
ES
Omega De Ville Co-Axial 1681057 Very good Rose gold 37mm Automatic
TOP
Omega De Ville Caliber 2500 Co-Axial Chronometer 18K 750 Rose...
Php 189,240
Free shipping
Verified Dealer
676
NL
Sinn 103 103.0619 New Steel 41mm Automatic
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
Php 138,400
Verified Dealer
103
DE
Breguet Classique 5140BA/12/9W6 New Yellow gold 40mm Automatic
TOP
Breguet Classique 40
Php 612,766
Verified Dealer
46
CH
Omega Speedmaster Professional Moonwatch 311.92.44.51.01.007 New Ceramic 44.2mm Automatic
Omega Speedmaster - Dark Side of the Moon - DSOM
Php 447,878
Free shipping
Verified Dealer
364
US
Rolex Sea-Dweller 16600T Very good Steel 40mm Automatic
Rolex Sea-Dweller
Php 543,667
Verified Dealer
5
US
B.R.M MK44 New 44mm Automatic
TOP
B.R.M MK 44
Php 372,832
Verified Dealer
53
FR
Breitling Chronomat 44 GMT AB042011/BB56 Very good Steel 44mm Automatic
Breitling Chronomat 44 GMT
Php 315,216
Verified Dealer
 
UK
Omega Seamaster Planet Ocean 215.62.40.20.13.001 New Ceramic 39.5mm Automatic
Omega Planet Ocean 600m Co-Axial Master Chronometer 39.5mm -...
Php 434,934
Verified Dealer
13
US
Breitling Transocean Unitime Pilot AB0510U6/BC26/159A New Steel 46mm Automatic
TOP
Breitling Transocean Unitime Pilot
Php 376,786
Verified Dealer
1536
ES
Chopard Mille Miglia 168588-3001 Very good Steel 39mm Automatic
TOP
Chopard Classic Racing Mill Automatic Chronograph Miglia - 16858
Php 144,049
Free shipping
Verified Dealer
676
NL
Rolex Sea-Dweller 126600 New Steel 43mm Automatic
Rolex Sea-Dweller 50th Year Anniversary 126600
Php 693,306
Free shipping
Verified Dealer
155
US
Breguet Reine de Naples 8908BB/52/864.D00D New White gold Automatic
TOP
Breguet Reine de Naples
Php 1,225,799
Verified Dealer
46
CH
Omega Seamaster Aqua Terra 220.12.41.21.03.002 New Steel 41mm Automatic
Omega Aqua Terra 8900 41mm Slate Blue Dial Omega 5 Year Warranty
Php 221,350
Free shipping
Verified Dealer
364
US
Rolex Submariner Date 116610LN Unworn Steel 40mm Automatic
Rolex Submariner Date
Php 620,256
Verified Dealer
11
DE
Omega De Ville Hour Vision 431.33.41.21.02.001 Unworn Steel 41mm Automatic
Omega De Ville Hour Vision
Php 237,256
Verified Dealer
15
NL
Rolex Datejust 126334 Very good Steel 41mm Automatic
Rolex Date just 41 126334 LC100 rhodium like new box/papers TOP
Php 564,332
Verified Dealer
37
DE
Omega Seamaster Planet Ocean 2200.51.00 Good Steel 45.5mm Automatic
Omega Seamaster Planet Ocean
Php 152,522
Verified Dealer
15
DE
Jaeger-LeCoultre Geophysic True Second Q8012520 Very good Rose gold 39.6mm Automatic
TOP
Jaeger-LeCoultre Geophysic True Second
Php 589,752
Verified Dealer
1536
ES
Rolex Submariner Date 116610LN Very good Steel 40mm Automatic
Rolex Submariner Date Black Ceramic
Php 499,933
Verified Dealer
1455
NL
Omega De Ville Co-Axial De Ville Co-Axial Chronometer 41mm Very good Steel 41mm Automatic
Omega 431.13.41.21.02.001
Php 169,572
Free shipping
Verified Dealer
611
US
Breguet GJ24BB8548DDC3 New White gold Automatic
TOP
Breguet Secret de la Reine
Php 2,611,786
Verified Dealer
46
CH
Omega Seamaster Aqua Terra 220.10.41.21.03.001 New Steel 41mm Automatic
Omega Aqua Terra 8900 Blue Master CoAxial - Omega 5 Year Warranty
Php 230,411
Free shipping
Verified Dealer
364
US
Omega Seamaster 168.1501 Very good Gold/Steel 36mm Automatic
Omega Seamaster
Php 78,803
Verified Dealer
11
DE
Omega Seamaster Aqua Terra 231.13.39.21.57.001 Omega Seamaster Aqua Terra, black MOP New Steel 38.5mm Automatic
Omega Seamaster Aqua Terra
Php 310,693
Verified Dealer
15
NL
Omega Seamaster Aqua Terra 231.10.43.22.02.003 New Steel 43mm Automatic
Omega Aqua Terra Annual Calendar 43mm - 231.10.43.22.02.003
Php 333,967
Verified Dealer
13
US
Chopard Mille Miglia 168571-3001 Fair Steel 44mm Automatic
Chopard Mille Miglia GTS
Php 214,661
Verified Dealer
15
DE
Omega Constellation Double Eagle 121.32.44.52.01.001 New Steel 44mm Automatic
TOP
Omega Constellation Double Eagle Day-Date Chrono (SPECIAL OFFER)
Php 299,113
Verified Dealer
1536
ES
Rolex Daytona 116515LN Very good Rose gold 40mm Automatic
Rolex Daytona Everose Gold Chocolate Dial
Php 1,403,768
Verified Dealer
1455
NL
Rolex GMT-Master II 116710LN Unworn Steel 40mm Automatic
Rolex GMT-Master II Pepsi Diamonds Baguette UNWORN
Php 840,340
Verified Dealer
147
DE
Chaumet Liens W23870-02A New Rose gold 33mm Automatic
TOP
Chaumet Liens 33
Php 309,128
Verified Dealer
46
CH
Omega Seamaster Planet Ocean 215.30.44.21.01.001 New Steel 43.5mm Automatic
Omega Planet Ocean 8900 43.5mm Black - 2020 5 Year Omega...
Php 257,595
Free shipping
Verified Dealer
364
US
Omega Constellation 2852-3 Very good Gold/Steel 36mm Automatic
Omega Constellation vintage Pie Pan with cross hair dial
Php 197,431
Verified Dealer
11
DE
Hamilton Intra-Matic H38416711 New Steel 40mm Automatic
Hamilton Intra-Matic
Php 91,965
Verified Dealer
 
IT
Omega Seamaster Planet Ocean 215.92.44.21.99.001 New Titanium 43.5mm Automatic
Omega Planet Ocean 600m Co-Axial Master Chronometer - 215.92.4...
Php 340,388
Verified Dealer
13
US
Breitling Avenger E73360 Very good Titanium 44mm Quartz
Breitling Avenger
Php 141,224
Verified Dealer
15
DE
Breitling A13051 Very good Steel 41mm Automatic
Breitling Aeromarine Shark Automatik Chronograph im Fullset
Php 107,274
Verified Dealer
108
DE
Panerai Luminor Marina PAM111 PAM00111 Very good Steel 44mm Manual winding
Panerai Luminor Marina Pam111
Php 257,028
Verified Dealer
1455
NL
Rolex Submariner Date 16613 Very good Gold/Steel 40mm Automatic
Rolex Submariner Date
Php 438,589
Verified Dealer
 
UK
Chaumet Liens W23871-02A New Rose gold 33mm Automatic
TOP
Chaumet Liens 33
Php 415,743
Verified Dealer
46
CH
Omega Seamaster Aqua Terra 220.12.41.21.01.001 New Steel 41mm Automatic
Omega Aqua Terra 8900 Black Strap Omega 5 Year Warranty
Php 221,350
Free shipping
Verified Dealer
364
US
Rolex Daytona 116515ln New Rose gold 40mm Automatic
Rolex Daytona
Php 1,620,595
Verified Dealer
21
US
Rolex Daytona Unworn Red gold 40mm Automatic
Rolex Daytona 40mm. Ref:116515LN Rose Gold 18k.Chronograph 2016
Php 1,577,343
Verified Dealer
12
UK
Rolex Datejust 126334 Unworn 41mm Automatic
Rolex Datejust 41 Reference 126334
Php 484,123
Verified Dealer
15
US
Ulysse Nardin Marine Chronometer 43mm 263-67-7/40 Very good Steel Automatic
Ulysse Nardin Marine Chronometer 43mm
Php 163,820
Verified Dealer
15
DE
Parmigiani Fleurier Kalpa PFC193-1000200-XO1442 Unworn Rose gold 48.2mm Automatic
Parmigiani Fleurier Kalpagraph Chronometre - PFC193-1000200-XO...
Php 1,631,002
Verified Dealer
13
US
Rolex Explorer II 16570 Very good Steel 40mm Automatic
Rolex Explorer II Black
Php 336,113
Verified Dealer
1455
NL
Rolex Sea-Dweller Deepsea 116660 Very good Steel 44mm Automatic
Rolex Sea-Dweller Deepsea
Php 485,919
Verified Dealer
 
UK
Rolex Submariner Date 16610 Very good Steel 40mm Automatic
Rolex Submariner Date 16610
Php 410,191
Free shipping
Verified Dealer
553
UK
Omega Seamaster Aqua Terra 220.10.41.21.01.001 New Steel 41mm Automatic
Omega Aqua Terra - Black Dial - Bracelet - 2020
Php 226,528
Free shipping
Verified Dealer
364
US
Rolex Explorer II 16570 Very good Steel 40mm Automatic
Rolex Explorer Camouflage Kalaschnikow Engraved Graviert Unikat
Php 621,217
Verified Dealer
147
DE
Omega De Ville Hour Vision 431.63.41.22.13.001 Very good Rose gold 41mm Automatic
Omega De Ville Hour Vision Annual Calendar Red Gold
Php 785,206
Verified Dealer
23
FI
Rolex Sea-Dweller 126600 Unworn 43mm Automatic
Rolex Pro Hunter - Sea Dweller Red
Php 1,381,584
Verified Dealer
150
SE
Omega Seamaster Aqua Terra 220.10.41.21.03.001 Very good Steel 41mm Automatic
Omega Seamaster Aqua Terra 41mm- Blue dial- 2018 Box & Papers
Php 208,188
Verified Dealer
106
UK
Omega Seamaster 168.1501 Very good Steel 36mm Quartz
Omega Seamaster
Php 53,383
Verified Dealer
11
DE
Rolex Submariner Date 16613 Very good Gold/Steel 40mm Automatic
Rolex Submariner Date Gold/Steel Blue
Php 507,842
Verified Dealer
1455
NL
Rolex Datejust 126334 Gold/Steel 41mm Automatic
Rolex 126334 Datejust 41 Wimbledon - White Gold Bezel Complete...
Php 552,180
Free shipping
Verified Dealer
165
UK

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.