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Chopard L.U.C Tourbillon Heritage 161911-9001 RRP £152,800 Ltd Ed
TOP
Chopard L.U.C Tourbillon Heritage 161911-9001 RRP £152,800 Ltd Ed
Rs. 3,271,750
Seller
The Watch Directory
39
UK
Omega Seamaster 300M Professional James Bond Serviced  &...
TOP
Omega Seamaster 300M Professional James Bond Serviced &...
Rs. 153,574
Free shipping
Seller
WatchPA
7
SI
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
Rs. 184,536
Seller
Classic Watch
 
DE
Ulysse Nardin Classico Paul David Nardin
TOP
Ulysse Nardin Classico Paul David Nardin
Rs. 463,269
Seller
Sense of Time
7
LV
Louis Moinet Memoris Red Eclipse
Louis Moinet Memoris Red Eclipse
Rs. 7,295,998
BrandBoutique Member
Louis Moinet
Rolex Sea-Dweller Deepsea
Rolex Sea-Dweller Deepsea
Rs. 938,120
Seller
Antwerp Watch Company
 
BE
Omega CONSTELLATION CHRONOMETER CAL.751 AUTOMATIC
Omega CONSTELLATION CHRONOMETER CAL.751 AUTOMATIC
Rs. 42,764
Seller
Wristmenwatches
IN
Omega 18K YG CONSTELLATION  168017
Omega 18K YG CONSTELLATION 168017
Rs. 368,992
Seller
NOSTIME
KR
Rolex Datejust Stainless Steel 69174
Rolex Datejust Stainless Steel 69174
Rs. 274,827
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
84
UK
Rolex Sea-Dweller Deepsea
Rolex Sea-Dweller Deepsea
Rs. 959,277
Seller
CARR
UK
Hublot 301.AI.460.RX
TOP
Hublot 301.AI.460.RX
Rs. 666,308
Seller
Deluxe ( Asia ) Ltd
11
HK
Rolex Datejust
Rolex Datejust
Rs. 609,894
Seller
Juwelier Rubin GbR
 
DE
Omega De Ville Stainless Steel White Automatic 424.10.33.20.05...
TOP
Omega De Ville Stainless Steel White Automatic 424.10.33.20.05...
Rs. 174,589
Seller
VIP WATCH & JEWELLERY
17
HK
Louis Moinet Memoris
Louis Moinet Memoris
Rs. 3,640,703
BrandBoutique Member
Louis Moinet
Rolex Submariner Date Gold/Steel
Rolex Submariner Date Gold/Steel
Rs. 476,781
Seller
Juwelier Burger, since 2001
440
NL
Rolex Date zaffiro art. Rd358nl
Rolex Date zaffiro art. Rd358nl
Rs. 216,192
Seller
Stroppiana SRL
222
IT
Corum ADMIRAL'S CUP CHRONOGRAPH 50MM LEFT HANDED PVD
Corum ADMIRAL'S CUP CHRONOGRAPH 50MM LEFT HANDED PVD
Rs. 263,566
Seller
NOSTIME
KR
Rolex Vintage UAE Air Force Pepsi Bezel GMT-Master B&P 1675
Rolex Vintage UAE Air Force Pepsi Bezel GMT-Master B&P 1675
Rs. 8,288,434
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
84
UK
Rolex Sea-Dweller
Rolex Sea-Dweller
Rs. 998,974
Seller
CARR
UK
Montblanc 102345
TOP
Montblanc 102345
Rs. 581,965
Seller
Deluxe ( Asia ) Ltd
11
HK
Rolex Oyster Datejust Bark Yellow Gold Diamonds 26 mm (Full Set)
Rolex Oyster Datejust Bark Yellow Gold Diamonds 26 mm (Full Set)
Rs. 656,298
Seller
Kleen Edelmetalen
113
NL
Rolex Sea-Dweller - Triple Six - Full Set
Rolex Sea-Dweller - Triple Six - Full Set
Rs. 679,462
Seller
PASSIONE VINTAGE
70
IT
Baume & Mercier Classima XL Chronograph Executives
TOP
Baume & Mercier Classima XL Chronograph Executives
Rs. 99,603
Seller
Private seller
 
DE
Rolex Sea-Dweller
Rolex Sea-Dweller
Rs. 424,664
Seller
Juwelier Burger, since 2001
440
NL
Rolex Explorer II SEL Scat/Gar art. Re782
Rolex Explorer II SEL Scat/Gar art. Re782
Rs. 347,452
Seller
Stroppiana SRL
222
IT
Vacheron Constantin AUTOMATIC 18K YG WATCH 4870 / 1019...
Vacheron Constantin AUTOMATIC 18K YG WATCH 4870 / 1019...
Rs. 487,596
Seller
NOSTIME
KR
Rolex Daytona White Gold, 2000(K-Series) Full Diamonds 40MM MINT
Rolex Daytona White Gold, 2000(K-Series) Full Diamonds 40MM MINT
Rs. 1,582,837
Free shipping
Seller
M.J.WATCHES
50
BE
Omega Seamaster Professional Chronograph 300 m - Automatic -...
Omega Seamaster Professional Chronograph 300 m - Automatic -...
Rs. 145,930
Seller
wagener-gold International e.K.
754
DE
Corum 895-931-06-0371-AN92
TOP
Corum 895-931-06-0371-AN92
Rs. 463,885
Seller
Deluxe ( Asia ) Ltd
11
HK
Rolex Oyster Datejust Turnograph White Gold Bezel Blue Dial 36 mm
Rolex Oyster Datejust Turnograph White Gold Bezel Blue Dial 36 mm
Rs. 378,337
Seller
Kleen Edelmetalen
113
NL
Rolex Daytona -  Full Set
Rolex Daytona - Full Set
Rs. 1,073,241
Seller
PASSIONE VINTAGE
70
IT
Rolex S/S Rare Mark I Dial Flat 4 Green Bezel Submariner 16610LV
Rolex S/S Rare Mark I Dial Flat 4 Green Bezel Submariner 16610LV
Rs. 955,351
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
84
UK
Omega Seamaster 300 M Chronometer
Omega Seamaster 300 M Chronometer
Rs. 193,801
Seller
Prestige Luxusuhren GmbH
2456
DE
Rolex submariner art. Rb639
Rolex submariner art. Rb639
Rs. 382,197
Seller
Stroppiana SRL
222
IT
Panerai LUMINOR MARINA 8 DAYS ACCIAIO PAM 590 Q
Panerai LUMINOR MARINA 8 DAYS ACCIAIO PAM 590 Q
Rs. 388,759
Seller
NOSTIME
KR
Rolex Seadweller 126600 43MM Ceramic New Model Not in Stores Rare
Rolex Seadweller 126600 43MM Ceramic New Model Not in Stores Rare
Rs. 1,119,825
Seller
The Watch Collector NY
 
US
Rolex 116520 Dayt. Stahl Neu B & P mit orig. 116506 Platin...
Rolex 116520 Dayt. Stahl Neu B & P mit orig. 116506 Platin...
Rs. 1,926,428
Seller
C & F Handelskontor GmbH
 
DE
Bulgari DG42BSCVDCH
TOP
Bulgari DG42BSCVDCH
Rs. 375,325
Seller
Deluxe ( Asia ) Ltd
11
HK
Rolex Oyster Perpetual Submariner 16610 Black PVD
Rolex Oyster Perpetual Submariner 16610 Black PVD
Rs. 560,011
Seller
Phigora
74
US
Breitling Colt Chronometer Automatic - A17380
Breitling Colt Chronometer Automatic - A17380
Rs. 122,766
Seller
wagener-gold International e.K.
754
DE
Omega Aqua Terra 150M Co-Axial Master Chronometer 41mm G
Omega Aqua Terra 150M Co-Axial Master Chronometer 41mm G
Rs. 299,504
Seller
Plus Watch - Luxury Watches
2184
IT
Omega Seamaster Diver 300 M
Omega Seamaster Diver 300 M
Rs. 193,801
Seller
Prestige Luxusuhren GmbH
2456
DE
Rolex Explorer I scat/gar art. Re345
Rolex Explorer I scat/gar art. Re345
Rs. 293,404
Seller
Stroppiana SRL
222
IT
Rolex 116710LN   GMT Master II Black Index Dial
Rolex 116710LN GMT Master II Black Index Dial
Rs. 556,662
Seller
K&S Watch & Jewellery
12
HK
Rolex ROLEX DAYTONA  16518 ZENITH ‘LUCKY EIGHT’
Rolex ROLEX DAYTONA 16518 ZENITH ‘LUCKY EIGHT’
Rs. 1,050,077
Seller
SENZATEMPO
40
IT
Speake-Marin SERPENT CALENDAR 42 MM
Speake-Marin SERPENT CALENDAR 42 MM
Rs. 617,692
Free shipping
Seller
RIVIERAWATCH
55
FR
Vacheron Constantin Overseas Automatic Chronometer
TOP
Vacheron Constantin Overseas Automatic Chronometer
Rs. 368,617
Seller
Private seller
 
UK
Rolex Oyster Perpetual Day-Date 18K YG 18038
Rolex Oyster Perpetual Day-Date 18K YG 18038
Rs. 790,631
Seller
Phigora
74
US
Rolex Yacht-Master II Ref. 116688 neues 2017er Modell aus...
Rolex Yacht-Master II Ref. 116688 neues 2017er Modell aus...
Rs. 2,493,933
Seller
Uhren2000 GmbH
220
DE
Rolex Daytona Cosmograph 6263  "BIG RED "aus Sammlung
Rolex Daytona Cosmograph 6263 "BIG RED "aus Sammlung
Rs. 5,366,204
Seller
C & F Handelskontor GmbH
 
DE
Breitling Navitimer
Breitling Navitimer
Rs. 254,721
Free shipping
Seller
Uhrencenter Berlin
214
DE
Rolex Seadweller SCAT/GAR art. Rb1172
Rolex Seadweller SCAT/GAR art. Rb1172
Rs. 451,688
Seller
Stroppiana SRL
222
IT
Rolex Datejust II 126334
Rolex Datejust II 126334
Rs. 636,995
Seller
Mall of the Watch
405
MC
Rolex Daytona Sel "A Series" ref. 16520
Rolex Daytona Sel "A Series" ref. 16520
Rs. 1,698,654
Seller
Eorologi
214
IT
Rolex Oyster Perpetual Date - 1501 - aus 1970
Rolex Oyster Perpetual Date - 1501 - aus 1970
Rs. 130,488
Seller
wagener-gold International e.K.
754
DE
Rolex COSMOGRAPH DAYTONA EDELSTAHL / GOLD 750 GELBGOLD
Rolex COSMOGRAPH DAYTONA EDELSTAHL / GOLD 750 GELBGOLD
Rs. 771,343
Free shipping
Seller
Timeless Watches GmbH
105
DE
Omega Speedmaster
Omega Speedmaster
Rs. 153,651
Seller
Joaillerie Royale
269
BE
Rolex Day-Date 40 Gelbgold Ref. 228238 Schwarz
Rolex Day-Date 40 Gelbgold Ref. 228238 Schwarz
Rs. 2,039,930
Seller
Uhren2000 GmbH
220
DE
Rolex Datejust 41MM Steel Blue Dial 'Fluted Bezel'...
Rolex Datejust 41MM Steel Blue Dial 'Fluted Bezel'...
Rs. 582,947
Free shipping
Seller
M.J.WATCHES
50
BE
Omega Seamaster Railmaster Big Size
Omega Seamaster Railmaster Big Size
Rs. 199,206
Seller
Uhrencenter Berlin
214
DE

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.