Buyer Protection Authenticity Guarantee Why Chrono24? Singapore  | SGD
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Rolex Submariner 16800 Tropical Bezel purple
TOP
Rolex Submariner 16800 Tropical Bezel purple
S$ 15,482
Free shipping
Seller
MASTROLORENZI S.A.S DI MATTIA MASTROLORENZI & CO.
47
IT
Ulysse Nardin Marine Chronometer Manufacture Rose Gold
TOP
Ulysse Nardin Marine Chronometer Manufacture Rose Gold
S$ 32,594
Seller
Sense of Time
 
LV
Rolex Daytona 116523 Stainless Steel & 18K Gold Model...
Rolex Daytona 116523 Stainless Steel & 18K Gold Model...
S$ 16,000
Seller
Private seller
SG
Ball Engineer Hydrocarbon Spacemaster Ball Spacemaster Glow
Ball Engineer Hydrocarbon Spacemaster Ball Spacemaster Glow
S$ 2,200
Seller
Private seller
SG
Breitling Chronomat 41 Limited Edition
Breitling Chronomat 41 Limited Edition
S$ 7,530
Seller
Private seller
SG
Casio PRX-8000YT-1
Casio PRX-8000YT-1
S$ 2,000
Seller
Private seller
SG
Omega Constellation Ladies Red Gold and Steel
Omega Constellation Ladies Red Gold and Steel
S$ 9,950
Seller
Private seller
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
Rolex Sea-Dweller
Rolex Sea-Dweller
S$ 18,000
Seller
ARIELLE JEWELLERS AND WATCHES TRADING
SG
Rolex Explorer II "Orange Hand"
Rolex Explorer II "Orange Hand"
S$ 17,500
Seller
Monster Time Gallery
SG
Rolex Vintage Oyster Perpetual Datejust Ref 1601 (Year 1970)
Rolex Vintage Oyster Perpetual Datejust Ref 1601 (Year 1970)
S$ 3,649
Seller
Asia Timepiece
SG
TAG Heuer Monza Chronograph 18K Gold Limited Edition Automatic
TAG Heuer Monza Chronograph 18K Gold Limited Edition Automatic
S$ 8,500
Seller
Lu-Ann Vintage Collection
SG
Zenith Grande Class El Primero
Zenith Grande Class El Primero
S$ 14,097
Seller
Waltraud Jost
15
DE
Lip France Marriage LIP Skeleton Wristwatch, Art of Mariage
Lip France Marriage LIP Skeleton Wristwatch, Art of Mariage
S$ 1,789
Seller
OnlineBtrust SL
6
ES
Rolex 16600 Sea-Dweller
Rolex 16600 Sea-Dweller
Price on request
Seller
Solo Tempo Firenze
 
IT
Omega Seamaster London Olympic 2012 Limited Edition
Omega Seamaster London Olympic 2012 Limited Edition
S$ 6,486
Seller
Uhrwerk-Bielefeld
15
DE
Omega Ploprof 1200M
Omega Ploprof 1200M
S$ 7,280
Seller
GRluxury Pte Ltd
SG
Rolex Sea-Dweller Deepsea
Rolex Sea-Dweller Deepsea
S$ 18,000
Seller
ARIELLE JEWELLERS AND WATCHES TRADING
SG
Rolex Vintage Explorer II "Albino" Straight hand
Rolex Vintage Explorer II "Albino" Straight hand
S$ 22,800
Seller
Monster Time Gallery
SG
Breitling Emergency Chronometre E76321 with Co-Pilot Module
Breitling Emergency Chronometre E76321 with Co-Pilot Module
S$ 6,610
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
Rolex Datejust Stainless Steel 69174
Rolex Datejust Stainless Steel 69174
S$ 5,716
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
66
UK
Rolex Datejust
Rolex Datejust
S$ 12,873
Seller
Juwelier Rubin GbR
 
DE
Hublot 301.AI.460.RX
TOP
Hublot 301.AI.460.RX
S$ 15,708
Seller
Deluxe ( Asia ) Ltd
9
HK
Omega Constellation Diamonds Ladies 27mm Automatic Mop (lnib)
Omega Constellation Diamonds Ladies 27mm Automatic Mop (lnib)
S$ 4,700
Seller
Goldman Luxury
SG
Omega Speedmaster 125 Anniversary Ref ST 378.0801
Omega Speedmaster 125 Anniversary Ref ST 378.0801
S$ 4,980
Seller
GRluxury Pte Ltd
SG
Rolex 16610LV 16610 LV "FLAT 4" Submariner 50th...
Rolex 16610LV 16610 LV "FLAT 4" Submariner 50th...
S$ 24,650
Seller
European Watch Company
55
US
Panerai Luminor Power Reserve PAM27
Panerai Luminor Power Reserve PAM27
S$ 9,850
Seller
Monster Time Gallery
SG
Omega Seamaster Professional Chronometer Ref 1681640 Blue
Omega Seamaster Professional Chronometer Ref 1681640 Blue
S$ 3,050
Seller
Asia Timepiece
SG
Chopard Mille Miglia Gran Turismo XL Chronograph
Chopard Mille Miglia Gran Turismo XL Chronograph
S$ 5,600
Seller
Lu-Ann Vintage Collection
SG
Ulysse Nardin Maxi Marine
Ulysse Nardin Maxi Marine
S$ 5,000
Seller
Sheen Watch @ Jewelry Pte Ltd
SG
Rolex Daytona 116520 Stahl Chronograph
Rolex Daytona 116520 Stahl Chronograph
S$ 17,095
Seller
Juwelier Rieger
99
DE
Bulgari DG42BSCVDCH
TOP
Bulgari DG42BSCVDCH
S$ 7,854
Seller
Deluxe ( Asia ) Ltd
9
HK
Rolex Rare S/S O/P UAE Air Force Pepsi Bezel GMT-Master...
Rolex Rare S/S O/P UAE Air Force Pepsi Bezel GMT-Master...
S$ 172,377
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
66
UK
Omega Seamaster Professional 300m Automatic - 41 mm
Omega Seamaster Professional 300m Automatic - 41 mm
S$ 2,591
Seller
wagener-gold International e.K.
700
DE
Omega Seamaster 300 Spectre 007 James Bond Limited Edition
Omega Seamaster 300 Spectre 007 James Bond Limited Edition
S$ 11,794
Seller
Swiss Horology
 
UK
Rolex Date zaffiro art. Rd358nl
Rolex Date zaffiro art. Rd358nl
S$ 4,563
Seller
Stroppiana SRL
217
IT
Longines Grande Vitesse
Longines Grande Vitesse
S$ 2,200
Seller
Joaillerie Royale
235
BE
Rolex Oyster Datejust Bark Yellow Gold Diamonds 26 mm (Full Set)
Rolex Oyster Datejust Bark Yellow Gold Diamonds 26 mm (Full Set)
S$ 13,852
Seller
Kleen Edelmetalen
109
NL
Rolex Sea-Dweller
Rolex Sea-Dweller
S$ 8,963
Seller
Juwelier Burger, since 2001
414
NL
Rolex Sea Dweller Stahl 16600 Automatik
Rolex Sea Dweller Stahl 16600 Automatik
S$ 9,110
Seller
Juwelier Rieger
99
DE
Montblanc 102345
TOP
Montblanc 102345
S$ 13,056
Seller
Deluxe ( Asia ) Ltd
9
HK
Omega - Seamaster Planet Ocean Professional Co-axial -...
Auction
Omega - Seamaster Planet Ocean Professional Co-axial -...
S$ 4,237
Estimated price
Seller
Catawiki BV
 
Rolex Sea-Dweller - Triple Six - Full Set
Rolex Sea-Dweller - Triple Six - Full Set
S$ 14,341
Seller
PASSIONE VINTAGE
67
IT
Rolex Sea-Dweller DeepSea D-Blue ref. 116660
Rolex Sea-Dweller DeepSea D-Blue ref. 116660
S$ 17,438
Seller
Eorologi
206
IT
Rolex Explorer II SEL Scat/Gar art. Re782
Rolex Explorer II SEL Scat/Gar art. Re782
S$ 7,334
Seller
Stroppiana SRL
217
IT
Baume & Mercier Classima XL Chronograph Executives
TOP
Baume & Mercier Classima XL Chronograph Executives
S$ 2,102
Seller
Private seller
 
DE
Rolex Oyster Datejust II Jubilee Steel Blue Dial 41 mm (Full Set)
Rolex Oyster Datejust II Jubilee Steel Blue Dial 41 mm (Full Set)
S$ 9,941
Seller
Kleen Edelmetalen
109
NL
Omega Seamaster Professional Chronograph 300 m - Automatic -...
Omega Seamaster Professional Chronograph 300 m - Automatic -...
S$ 3,080
Seller
wagener-gold International e.K.
700
DE
Rolex Yacht Master 116622 Stahl Platin 40 mm Yacht-Master
Rolex Yacht Master 116622 Stahl Platin 40 mm Yacht-Master
S$ 12,206
Seller
Juwelier Rieger
99
DE
Corum 895-931-06-0371-AN92
TOP
Corum 895-931-06-0371-AN92
S$ 9,707
Seller
Deluxe ( Asia ) Ltd
9
HK
Rolex Sea-Dweller 126600 Red NEW
Rolex Sea-Dweller 126600 Red NEW
S$ 19,555
Seller
Lux Watches
 
DE
Rolex Daytona -  Full Set
Rolex Daytona - Full Set
S$ 22,653
Seller
PASSIONE VINTAGE
67
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
S$ 17,238
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
66
UK
Rolex submariner art. Rb639
Rolex submariner art. Rb639
S$ 8,067
Seller
Stroppiana SRL
217
IT
Omega Constellation Ref. 168.004 18k Gold Vintage
Omega Constellation Ref. 168.004 18k Gold Vintage
S$ 10,879
Seller
Best Deals HD
 
US
Omega Seamaster 300M Midsize
Omega Seamaster 300M Midsize
S$ 2,730
Seller
Juwelier Burger, since 2001
414
NL
Rolex Seadweller 126600 43MM Ceramic New Model Not in Stores Rare
Rolex Seadweller 126600 43MM Ceramic New Model Not in Stores Rare
S$ 23,404
Seller
The Watch Collector NY
 
US
Rolex Oyster Perpetual 39 mm
Rolex Oyster Perpetual 39 mm
S$ 6,680
Seller
Uhrencenter Berlin
192
DE
Rolex Daydate Weissgold 750 Diamanten 18239 Automatik  DayDate
Rolex Daydate Weissgold 750 Diamanten 18239 Automatik DayDate
S$ 19,540
Seller
Juwelier Rieger
99
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.