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Chrono24 - Singapore

40,381 listings including promoted listings
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Promoted
Rolex Daytona
Gelbgold / Oysterflex 116518LN Champagner Diamant discontinued DIAL
S$74,084
+ S$282 for shipping
Promoted
Rolex Datejust 41
NEW 2023 Mint Green Stick Dial Fluted Bezel - Stainless Steel Jubilee Bracelet
S$21,939
Free shipping
Promoted
Rolex Datejust 41
NEW 2023 Motif Green Dial Fluted Bezel Stainless Steel Jubilee Bracelet
S$22,624
Free shipping
Promoted
Rolex Datejust 41
Grey Slate Wimbledon Green Roman Dial Oyster Bracelet 126334
S$19,888
Free shipping
Promoted
Rolex Submariner Date
41mm NEW/UNWORN
S$19,737
Free shipping
Longines Spirit
L3.810.4.73.6
S$1,783
Excl. shipping
Private Seller
Promoted
Omega Seamaster Planet Ocean
600M 37,5 Titan Automatik Ref. 232.90.38.20.03.001
S$6,499
+ S$134 for shipping
Promoted
Omega Constellation
Automatic Chronometer ref.168.017 from 1966
S$2,342
+ S$49 for shipping
Popular
Rolex Submariner Date
41mm 126610LN Stainless Steel Unworn Warranty 2023 B&P
S$22,272
+ S$524 for shipping
Popular
Rolex GMT-Master II
Sprite 8/2022 Like new
S$27,188
+ S$2,988 for shipping
Popular
Rolex Submariner Date
FullSet / 09.2021 / Lc: EU
S$18,809
+ S$672 for shipping
Popular
Omega Speedmaster Professional Moonwatch
3861 Hesalite 310.30.42.50.01.001
S$7,811
+ S$69 for shipping
Promoted
Rolex Datejust 41
Oyster 41 mm Oystersteel Mint Green Dial Fluted Bezel Oyster Bracelet Ref 126334
S$22,631
Free shipping
Popular
Omega Speedmaster Professional Moonwatch
Apollo 11 50th
S$15,426
+ S$193 for shipping
Popular
Omega Seamaster Railmaster
(Box and Papers warranty till Oct 2028)
S$3,900
Excl. shipping
Private Seller
Promoted
Omega De Ville Co-Axial
Chronometer Automatik Datum Edelstahl Ref. 4831.40.31
S$3,660
+ S$125 for shipping
Popular
Rolex Datejust 41
126334
S$17,912
+ S$297 for shipping
Popular
Omega Seamaster Aqua Terra
Master Chronometer
S$8,035
+ S$148 for shipping
Popular
Breitling Bentley Motors
A25362
S$5,005
+ S$296 for shipping
Popular
Rolex Datejust 41
Slate Dial 126334
S$15,765
+ S$450 for shipping
Popular
Omega Seamaster Diver 300 M
42mm Black 210.30.42.20.01.001
S$6,001
+ S$69 for shipping
Promoted
Rolex Submariner Date
41mm Stainless Steel Black Dial - Ceramic Bezel (126610LN)
S$21,177
Free shipping
Rolex Sea-Dweller
Y2021 Sea-Dweller Single Red SD43 Ref. 126600 Full Set
S$17,600
+ S$686 for shipping
Steinhart
Yachtimer Plexi Gnomon limited edition
S$1,900
Excl. shipping
Private Seller
Promoted
Omega Seamaster Aqua Terra
GoodPlanet Titan Ref. 231.92.39.21.04.001 B&P 2022
S$7,395
+ S$134 for shipping
Popular
Rolex Submariner (No Date)
2023 Unworn
S$19,272
+ S$373 for shipping
Popular
Omega Speedmaster Professional Moonwatch
Hesalite Cal 3861 310.30.42.50.01.001
S$6,714
+ S$69 for shipping
Rolex Datejust 41
(Oyster Fluted bezel Mint green dial)
S$20,874
+ S$2,620 for shipping
Popular
Omega Globemaster
Constellation Globemaster
S$5,507
+ S$193 for shipping
Popular
Tudor Black Bay Fifty-Eight
79030N Fullset aus 2022
S$5,214
+ S$895 for shipping

Worry-Free Watch Purchases

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Promoted
Rolex Submariner Date
41mm Stainless Steel Black Dial - Ceramic Bezel (126610LN)
S$21,397
Free shipping
Popular
Rolex Datejust 41
126334 Azzurro Blue Roman Dial Fluted Bezel - Oyster Bracelet - 2021 Complete
S$17,138
Free shipping
Popular
Rolex Datejust 41
126334
S$20,691
+ S$448 for shipping
Promoted
Omega Seamaster Planet Ocean
Stahl Automatik Herrenuhr 215.30.44.21.01.001 B&P
S$6,797
+ S$134 for shipping
Popular
Rolex Datejust 41
Rhodium Diamond - Mint - 2022 box and papers
S$19,545
+ S$117 for shipping
Popular
Rolex Datejust 41
Wimbledon
S$19,421
+ S$163 for shipping
Popular
Omega Seamaster Planet Ocean
600M Summer Edition Diver Blue 2023 Bracelet
S$10,006
Free shipping
Popular
Omega Seamaster Diver 300 M
Limited 50 years of 007 James Bond
S$6,050
+ S$193 for shipping
Rolex Submariner (No Date)
114060 no Date LC100 Fullset aus 2019
S$19,107
+ S$895 for shipping
Promoted
Rolex Datejust 41
Oyster 41 mm Oystersteel Mint Green Dial Fluted Bezel Jubilee Bracelet Ref 126334
S$23,317
Free shipping
Rolex Submariner Date
2022 - 126610ln
S$19,651
+ S$148 for shipping
Rolex Submariner Date
126610ln new condition 2022
S$19,571
+ S$133 for shipping
Promoted
Omega Seamaster Diver 300 M
Chronometer Stahl Gold Automatik Herrenuhr 2553.50.00
S$4,855
+ S$134 for shipping
Rolex Submariner (No Date)
124060 - NEW
S$20,168
+ S$160 for shipping
Omega Seamaster 1948
Co-axial Chronometer London Olympic Games 2012
S$7,955
+ S$144 for shipping
Promoted
Omega Seamaster Aqua Terra
220.10.41.21.03.001
S$5,006
Excl. shipping
Private Seller
Popular
Rolex GMT-Master II
Ref.126720VTNR Sprite Eu 2023 ungetragen unworn
S$29,117
+ S$299 for shipping
Rolex Datejust 41
(Steel and white gold Wimbledon dial Oyster bracelet)
S$18,603
+ S$2,620 for shipping
Promoted
Rolex Datejust 41
18k White Gold and Steel Blue Index Dial Jubilee 126334
S$21,808
Free shipping
Popular
Omega Speedmaster Professional Moonwatch
Co-Axial Master Chronometer
S$10,458
+ S$172 for shipping
Popular
Rolex Submariner (No Date)
NEW 2023 124060 No Date Black Dial Ceramic Bezel - Complete Set
S$17,550
Free shipping
Promoted
Omega Seamaster Aqua Terra
150M GMT Chronograph Stahl 231.13.44.52.04.001 B&P
S$6,050
+ S$134 for shipping
Popular
Rolex Submariner (No Date)
124060 12/2023
S$18,585
+ S$448 for shipping
Popular
Rolex Datejust 41
Blue Dial - Good Conditions - Fullset - 01/2022
S$18,809
+ S$2,241 for shipping
Tudor Black Bay Bronze
79250BM
S$3,349
Excl. shipping
Private Seller
Popular
Omega Speedmaster
Full set Speedmaster Dark Side Of The Moon
S$12,101
+ S$112 for shipping
Rolex Submariner (No Date)
‘Non Date’
S$18,778
+ S$2,620 for shipping
Promoted
Rolex Datejust 41
Stainless Steel & White Gold - Black Index Dial - Fluted Bezel 126334
S$19,202
Free shipping
Rolex GMT-Master II
Sprite Oyster 126720VTNR
S$29,279
+ S$450 for shipping
Rolex Submariner (No Date)
No-Date 124060 - Unworn 2021
S$17,687
Free shipping
Promoted
Omega Seamaster Aqua Terra
Automatik Herrenuhr 231.10.42.21.03.001
S$6,050
+ S$134 for shipping
Rolex Submariner (No Date)
124060
S$18,973
+ S$448 for shipping
Popular
Omega Seamaster Diver 300 M
36mm 25518000 With Papers
S$4,258
+ S$223 for shipping

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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Our support team would be happy to help.

+1 646-887-3560