Buyer Protection Authenticity Guarantee Why Chrono24? Singapore  | SGD
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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
S$ 64,270
Seller
The Watch Directory
45
UK
Omega Speedmaster Moonwatch Co-Axial 2017
TOP
Omega Speedmaster Moonwatch Co-Axial 2017
S$ 12,790
Free shipping
Seller
MASTROLORENZI S.A.S DI MATTIA MASTROLORENZI & CO.
48
IT
Rolex Oyster Perpetual DateJust Automatic Steel Mens Watch 1625
TOP
Rolex Oyster Perpetual DateJust Automatic Steel Mens Watch 1625
S$ 3,671
Seller
Watch World Star
153
UK
Sinn 956 Klassik
TOP
Sinn 956 Klassik
S$ 4,679
Seller
Classic Watch
 
DE
Omega Seamaster Professional 300 M 2532.80.00 Official Serviced
TOP
Omega Seamaster Professional 300 M 2532.80.00 Official Serviced
S$ 2,914
Free shipping
Seller
WatchPA
7
SI
Zenith Vintage El Primero Sub-Sea "Diver" / 44 mm /...
TOP
Zenith Vintage El Primero Sub-Sea "Diver" / 44 mm /...
S$ 6,961
Free shipping
Seller
VintageCaliber GmbH
32
DE
Ulysse Nardin Classico Paul David Nardin
TOP
Ulysse Nardin Classico Paul David Nardin
S$ 9,714
Free shipping
Seller
Sense of Time
14
LV
Omega Speedmaster 38mm Diamonds 3815.71.53
TOP
Omega Speedmaster 38mm Diamonds 3815.71.53
S$ 6,443
Seller
Fratelli Monterisi Gioielli S.r.L.
 
IT
Omega Seamaster Planet Ocean
TOP
Omega Seamaster Planet Ocean
S$ 10,098
Seller
Chad Warrick
 
US
Breitling Transocean Chronograph Unitime
Breitling Transocean Chronograph Unitime
S$ 11,000
Seller
Private Seller
SG
Panerai Luminor Power Reserve Automatic PAM90
Panerai Luminor Power Reserve Automatic PAM90
S$ 5,750
Seller
Monster Time Gallery
SG
Panerai Luminor 1950 PAM 127 "Fiddy" Limited Edition
Panerai Luminor 1950 PAM 127 "Fiddy" Limited Edition
S$ 18,980
Seller
GRluxury Pte Ltd
SG
Louis Moinet Memoris Red Eclipse
Louis Moinet Memoris Red Eclipse
S$ 152,389
BrandBoutique Member
Louis Moinet
Rolex Sea-Dweller
Rolex Sea-Dweller
S$ 18,000
Seller
ARIELLE JEWELLERS AND WATCHES TRADING
SG
TAG Heuer Carrera Heuer-02T
TAG Heuer Carrera Heuer-02T
S$ 18,931
Free shipping
Seller
DUALL PTE LTD
SG
Rolex Oyster Perpetual Datejust
Rolex Oyster Perpetual Datejust
S$ 3,950
Seller
Asia Timepiece
SG
Chopard Tycoon XL Two O Ten Chronograph
Chopard Tycoon XL Two O Ten Chronograph
S$ 4,125
Seller
Lu-Ann Vintage Collection
SG
Omega Seamaster Planet Ocean Good Planet
Omega Seamaster Planet Ocean Good Planet
S$ 6,380
Seller
The Time Co.
SG
Breitling Chronomat 41
Breitling Chronomat 41
S$ 6,601
Free shipping
Seller
Swiss Timepieces LTD
12
UK
Breitling Super Avenger II
Breitling Super Avenger II
S$ 5,181
Seller
Grand Watches
 
DE
Panerai Luminor Power Reserve PAM27
Panerai Luminor Power Reserve PAM27
S$ 9,850
Seller
Monster Time Gallery
SG
Louis Moinet Memoris
Louis Moinet Memoris
S$ 76,042
BrandBoutique Member
Louis Moinet
Rolex Sea-Dweller Deepsea
Rolex Sea-Dweller Deepsea
S$ 18,200
Seller
ARIELLE JEWELLERS AND WATCHES TRADING
SG
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$ 3,622
Seller
Asia Timepiece
SG
Rolex Cosmograph
Rolex Cosmograph
S$ 32,119
Seller
Tangible Investments
 
US
Omega Seamaster Aqua Terra Master Co Axial Blue
Omega Seamaster Aqua Terra Master Co Axial Blue
S$ 4,980
Seller
The Time Co.
SG
TAG Heuer Grand Carrera
TAG Heuer Grand Carrera
S$ 3,663
Seller
John Bull & Company Ltd
 
UK
Ulysse Nardin Monaco Yacht Show 2010 LIMITED EDITION
Ulysse Nardin Monaco Yacht Show 2010 LIMITED EDITION
S$ 20,433
Seller
BuyGoodWatches
 
US
Bulgari DG42BSCVDCH
TOP
Bulgari DG42BSCVDCH
S$ 7,788
Seller
Deluxe ( Asia ) Ltd
20
HK
Ulysse Nardin Maxi Marine
Ulysse Nardin Maxi Marine
S$ 5,000
Seller
Sheen Watch @ Jewelry Pte Ltd
SG
Omega 42420372002001
TOP
Omega 42420372002001
S$ 6,481
Free shipping
Seller
好百年鐘錶珠寶 Good Century Watches & Jewelry Co.Ltd
 
HK
Omega Speedmaster 125 Anniversary Ref ST 378.0801
Omega Speedmaster 125 Anniversary Ref ST 378.0801
S$ 4,980
Seller
GRluxury Pte Ltd
SG
Omega Seamaster Professional Chronometer Ref 1681640 Blue
Omega Seamaster Professional Chronometer Ref 1681640 Blue
S$ 3,027
Seller
Asia Timepiece
SG
Rowe Bros. Chicago Rowe Bros 14k Gold 17 Jewel Antique
Rowe Bros. Chicago Rowe Bros 14k Gold 17 Jewel Antique
S$ 1,708
Seller
Tangible Investments
 
US
Omega Constellation Diamonds Ladies 27mm Automatic Mop (lnib)
Omega Constellation Diamonds Ladies 27mm Automatic Mop (lnib)
S$ 4,700
Seller
Goldman Luxury
SG
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...
S$ 3,623
Seller
VIP WATCH & JEWELLERY
21
HK
Rolex GMT-Master II Blue-Red Pepsi
Rolex GMT-Master II Blue-Red Pepsi
S$ 9,567
Seller
DALIA DIAMONDS
 
US
Montblanc 102345
TOP
Montblanc 102345
S$ 12,076
Seller
Deluxe ( Asia ) Ltd
20
HK
Omega Seamaster Professional  300m Automatic - 41 mm
Omega Seamaster Professional 300m Automatic - 41 mm
S$ 2,898
Seller
wagener-gold International e.K.
825
DE
Omega Seamaster Planet Ocean - 232.30.46.21.01.002 - NO...
Auction
Omega Seamaster Planet Ocean - 232.30.46.21.01.002 - NO...
S$ 162
Estimated price
Seller
Catawiki BV
 
Rolex Explorer II scat/gar art. Re352
Rolex Explorer II scat/gar art. Re352
S$ 6,961
Seller
Stroppiana SRL
229
IT
Rolex Vintage UAE Air Force Pepsi Bezel GMT-Master B&P 1675
Rolex Vintage UAE Air Force Pepsi Bezel GMT-Master B&P 1675
S$ 174,447
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
91
UK
Elgin 14k Muti-Tone Gold Elgin Antique Pocket Watch 1.5"...
Elgin 14k Muti-Tone Gold Elgin Antique Pocket Watch 1.5"...
S$ 1,708
Seller
Tangible Investments
 
US
Omega Speedmaster Chronograph Stainless Steel Gents 323.32.40....
Omega Speedmaster Chronograph Stainless Steel Gents 323.32.40....
S$ 5,316
Seller
Xupes.com
62
UK
Eberhard & Co. Eberhard Extra Fort Chrono ref. 31951
Eberhard & Co. Eberhard Extra Fort Chrono ref. 31951
S$ 2,428
Seller
Eorologi
223
IT
Rolex Day-Date President Platium Watch 18206
Rolex Day-Date President Platium Watch 18206
S$ 27,182
Seller
Diamond Box, Inc. DBA Solitaire Bridal & Estate Jewellers
 
US
Hublot 301.AI.460.RX
TOP
Hublot 301.AI.460.RX
S$ 13,827
Seller
Deluxe ( Asia ) Ltd
20
HK
Omega Seamaster Professional 300 m Automatic
Omega Seamaster Professional 300 m Automatic
S$ 3,205
Seller
wagener-gold International e.K.
825
DE
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (1997)
Rolex Oyster Submariner Gold Steel Blue Dial 40 mm (1997)
S$ 10,847
Seller
Kleen Edelmetalen
115
NL
Rolex submariner art. Rb639
Rolex submariner art. Rb639
S$ 8,014
Seller
Stroppiana SRL
229
IT
Rolex Oyster Perpetual Day-Date 18K YG 18038
Rolex Oyster Perpetual Day-Date 18K YG 18038
S$ 16,400
Seller
Phigora
83
US
TAG Heuer Link Stainles Steel Diamond Dot Dial Wristwatch
TAG Heuer Link Stainles Steel Diamond Dot Dial Wristwatch
S$ 1,770
Seller
Tangible Investments
 
US
Rolex - Datejust - 68278 - Women - 1980-1989
Auction
Rolex - Datejust - 68278 - Women - 1980-1989
S$ 8,095
Estimated price
Seller
Catawiki BV
 
Rolex SUBMARINER DATE EDELSTAHL HERRENUHR
Rolex SUBMARINER DATE EDELSTAHL HERRENUHR
S$ 8,888
Seller
Timeless Watches GmbH
117
DE
Glashütte Original Senator Chronograph Panorama Date
Glashütte Original Senator Chronograph Panorama Date
S$ 16,675
Free shipping
Seller
Istock LTD
37
LV
Corum 895-931-06-0371-AN92
TOP
Corum 895-931-06-0371-AN92
S$ 9,626
Seller
Deluxe ( Asia ) Ltd
20
HK
Omega Seamaster Professional Chronograph 300 m - Automatic -...
Omega Seamaster Professional Chronograph 300 m - Automatic -...
S$ 3,060
Seller
wagener-gold International e.K.
825
DE
Rolex Oyster Datejust Turnograph White Gold Bezel Blue Dial 36 mm
Rolex Oyster Datejust Turnograph White Gold Bezel Blue Dial 36 mm
S$ 7,933
Seller
Kleen Edelmetalen
115
NL
Rolex Date zaffiro art. Rd358nl
Rolex Date zaffiro art. Rd358nl
S$ 4,695
Seller
Stroppiana SRL
229
IT
Rolex 2014 Datejust 31mm Midsize Watch Full Box & Papers...
Rolex 2014 Datejust 31mm Midsize Watch Full Box & Papers...
S$ 7,702
Seller
Time Honored
 
US

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.