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B.R.M V12-44- World Club Ten's 2016
TOP
B.R.M V12-44- World Club Ten's 2016
S$ 9,783
Free shipping
Seller
Solexport International
MU
B.R.M V18-48-TN-CAP-AR
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B.R.M V18-48-TN-CAP-AR
S$ 6,384
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Solexport International
MU
Omega Seamaster Planet Ocean  45,5mm Co-Axial 600m
TOP
Omega Seamaster Planet Ocean 45,5mm Co-Axial 600m
S$ 5,780
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Przedsiębiorstwo Handlowe Usługowe
62
PL
Rolex Oyster Perpetual Daytona
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Rolex Oyster Perpetual Daytona
S$ 32,094
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Rent a Box Schmuck und Uhren AG
6
CH
Omega Men's 31192445101003 Speedmaste CO-AXIAL Chrono  44,25 MM
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Omega Men's 31192445101003 Speedmaste CO-AXIAL Chrono 44,25 MM
S$ 11,771
Seller
Helvetic Time AG - HarveyStore.com
870
CH
Breitling Super Avenger Chronometer / Brillants 8,5ct.
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Breitling Super Avenger Chronometer / Brillants 8,5ct.
S$ 20,726
Free shipping
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Kreativ & Exclusiv
63
DE
Panerai RADIOMIR 1940 3 DAYS GMT PAM570 Limited 300 ex
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Panerai RADIOMIR 1940 3 DAYS GMT PAM570 Limited 300 ex
S$ 36,312
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RIVIERAWATCH
63
FR
Ulysse Nardin Marine Chronometer Manufacture Limited
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Ulysse Nardin Marine Chronometer Manufacture Limited
S$ 6,632
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Sense of Time
33
LV
Breitling Transocean Chronograph Unitime
Breitling Transocean Chronograph Unitime
S$ 11,000
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SG
B.R.M V12 44 MARTINI WHITE
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B.R.M V12 44 MARTINI WHITE
S$ 11,938
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Solexport International
MU
Rolex Sea-Dweller
Rolex Sea-Dweller
S$ 18,500
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ARIELLE JEWELLERS AND WATCHES TRADING
SG
TAG Heuer Carrera Heuer-02T
TAG Heuer Carrera Heuer-02T
S$ 18,502
Free shipping
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DUALL PTE LTD
SG
Panerai Luminor Power Reserve PAM27
Panerai Luminor Power Reserve PAM27
S$ 9,850
Seller
Monster Time Gallery
SG
Rolex Oyster Perpetual Datejust
Rolex Oyster Perpetual Datejust
S$ 3,950
Seller
Asia Timepiece
SG
Louis Moinet Memoris Red Eclipse
Straight from the manufacturer
Louis Moinet Memoris Red Eclipse
S$ 158,312
BrandBoutique Member
Louis Moinet
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
TOP
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
S$ 47,753
Seller
RIVIERAWATCH
63
FR
Breitling Transocean Unitime Pilot Like New Under Warranty
Breitling Transocean Unitime Pilot Like New Under Warranty
S$ 6,880
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The Time Co.
SG
Chopard Tycoon XL Two O Ten Chronograph
Chopard Tycoon XL Two O Ten Chronograph
S$ 4,250
Seller
Lu-Ann Vintage Collection
SG
Rolex Sea-Dweller Deepsea
Rolex Sea-Dweller Deepsea
S$ 18,500
Seller
ARIELLE JEWELLERS AND WATCHES TRADING
SG
Longines Master Collection
Longines Master Collection
S$ 2,902
Free shipping
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Relojes y Diamantes S.L.
15
ES
Omega Ploprof 1200M
Omega Ploprof 1200M
S$ 7,280
Seller
GRluxury Pte Ltd
SG
Rolex Vintage Oyster Perpetual Datejust Ref 1601 (Year 1970)
Rolex Vintage Oyster Perpetual Datejust Ref 1601 (Year 1970)
S$ 3,950
Seller
Asia Timepiece
SG
Louis Moinet Memoris
Straight from the manufacturer
Louis Moinet Memoris
S$ 78,998
BrandBoutique Member
Louis Moinet
Omega Constellation Diamonds Ladies 27mm Automatic Mop (lnib)
Omega Constellation Diamonds Ladies 27mm Automatic Mop (lnib)
S$ 4,700
Seller
Goldman Luxury
SG
Ulysse Nardin Maxi Marine
Ulysse Nardin Maxi Marine
S$ 5,000
Seller
Sheen Watch @ Jewelry Pte Ltd
SG
Rolex Thunder Bird Turn-O-Graph 16253
Rolex Thunder Bird Turn-O-Graph 16253
S$ 6,211
Seller
Lu-Ann Vintage Collection
SG
Omega Seamaster Stainless Steel Blue Automatic 212.30.41.20.03...
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Omega Seamaster Stainless Steel Blue Automatic 212.30.41.20.03...
S$ 4,372
Seller
VIP WATCH & JEWELLERY
30
HK
Franck Muller Chronometro Master of Complications Rose Gold
Franck Muller Chronometro Master of Complications Rose Gold
S$ 11,773
Free shipping
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Relojes y Diamantes S.L.
15
ES
Omega Speedmaster 125 Anniversary Ref ST 378.0801
Omega Speedmaster 125 Anniversary Ref ST 378.0801
S$ 4,980
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GRluxury Pte Ltd
SG
Omega Seamaster Professional Chronometer Ref 1681640 Blue
Omega Seamaster Professional Chronometer Ref 1681640 Blue
S$ 2,947
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Asia Timepiece
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Bulgari DG42BSCVDCH
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Bulgari DG42BSCVDCH
S$ 7,569
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Deluxe ( Asia ) Ltd
34
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Rolex Day-Date
Rolex Day-Date
S$ 14,741
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Uhrenhandel Eva Krause
 
DE
Breitling Bentley Mark VI
Breitling Bentley Mark VI
S$ 12,933
Seller
Carat & Co.
 
US
Omega De Ville Prestige Co-Axial Chronometer, 4875.50.01
Omega De Ville Prestige Co-Axial Chronometer, 4875.50.01
S$ 2,425
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The Watch Collector UK
 
UK
Breitling Crosswind Special Limited Edition
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Breitling Crosswind Special Limited Edition
S$ 7,213
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Private Seller
 
IT
Omega Seamaster Ceramics Black Automatic 215.92.46.22.01.004
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Omega Seamaster Ceramics Black Automatic 215.92.46.22.01.004
S$ 12,536
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VIP WATCH & JEWELLERY
30
HK
Zenith Chronomaster XXT Open Reserve de Marche Rose Gold
Zenith Chronomaster XXT Open Reserve de Marche Rose Gold
S$ 22,981
Free shipping
Seller
Relojes y Diamantes S.L.
15
ES
Breitling BENTLEY GMT LIGHT BODY B04
Breitling BENTLEY GMT LIGHT BODY B04
S$ 15,918
Seller
GEAY
 
FR
Omega Seamaster Planet Ocean 215.30.44.21.01.001
Omega Seamaster Planet Ocean 215.30.44.21.01.001
S$ 6,620
Free shipping
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Montauk Group Ltd
25
CH
Rolex Datejust art. Rs184bj
Rolex Datejust art. Rs184bj
S$ 4,145
Seller
Stroppiana SRL
245
IT
Omega Seamaster Professional 300M Chrono Diver, 41.5mm, Ref...
TOP
Omega Seamaster Professional 300M Chrono Diver, 41.5mm, Ref...
S$ 4,309
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Private Seller
 
DE
Rolex GMT-Master II
Rolex GMT-Master II
S$ 12,419
Seller
Uhrenhandel Eva Krause
 
DE
IWC Fliegerchronograph, Ref. 3777
IWC Fliegerchronograph, Ref. 3777
S$ 5,787
Seller
Uhren Bräu
8
DE
Rolex Mens Rolex 36 MM Datejust Jubilee Stainless Steel Black...
Rolex Mens Rolex 36 MM Datejust Jubilee Stainless Steel Black...
S$ 5,315
Seller
Jewelry For Less Group Inc.
 
US
Omega Seamaster Stainless Steel Silver Automatic 231.10.42.21....
TOP
Omega Seamaster Stainless Steel Silver Automatic 231.10.42.21....
S$ 5,970
Seller
VIP WATCH & JEWELLERY
30
HK
Rolex DAYTONA ACCIAIO 16520 ZENITH OSVALDO PATRIZZI QUADRANTE...
TOP
Rolex DAYTONA ACCIAIO 16520 ZENITH OSVALDO PATRIZZI QUADRANTE...
S$ 66,322
Seller
Private Seller
 
IT
Rolex Day-Date 18238 mit Super-Präsident-Band
TOP
Rolex Day-Date 18238 mit Super-Präsident-Band
S$ 21,431
Seller
Private Seller
 
DE
Omega Seamaster 300 233.30.41.21.01.001
Omega Seamaster 300 233.30.41.21.01.001
S$ 5,973
Free shipping
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Montauk Group Ltd
25
CH
TAG Heuer Monaco Chronograph
TAG Heuer Monaco Chronograph
S$ 3,648
Free shipping
Seller
Relojes y Diamantes S.L.
15
ES
Rolex Daytona Zenith T-series 1996 Patrizzi dial, full set,...
TOP
Rolex Daytona Zenith T-series 1996 Patrizzi dial, full set,...
S$ 57,205
Seller
Private Seller
 
DE
Omega Seamaster Aqua Terra
Omega Seamaster Aqua Terra
S$ 5,886
Seller
GEAY
 
FR
Breitling Avenger II
Breitling Avenger II
S$ 6,631
Seller
Kloese Watches
 
NL
Breitling Navitimer World GMT Ref A24322 Edelstahl 2007
Breitling Navitimer World GMT Ref A24322 Edelstahl 2007
S$ 6,118
Seller
Uhrenhandel Eva Krause
 
DE
Chopard Pro One L.U.C Date Automatic 8912
Chopard Pro One L.U.C Date Automatic 8912
S$ 4,655
Seller
Phigora
113
US
Rolex Oyster Perpetual Day-Date
TOP
Rolex Oyster Perpetual Day-Date
S$ 29,267
Seller
Private Seller
 
US
Breitling Navitimer 01 AB0120 / Faltschließe
Breitling Navitimer 01 AB0120 / Faltschließe
S$ 6,947
Seller
Uhren Bräu
8
DE
Rolex Sea-Dweller Deepsea
TOP
Rolex Sea-Dweller Deepsea
S$ 20,072
Seller
Private Seller
 
UK
Omega Seamaster Planet Ocean
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Omega Seamaster Planet Ocean
S$ 5,434
Seller
Private Seller
 
PL
Omega Speedmaster Dark Side of the Moon 311.92.44.51.01.003
Omega Speedmaster Dark Side of the Moon 311.92.44.51.01.003
S$ 11,010
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Montauk Group Ltd
25
CH
Bulgari Diagono
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Bulgari Diagono
S$ 16,211
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Private Seller
 
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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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