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Rolex Lady-Datejust 178344 Very good Steel 31mm Automatic
TOP
Rolex Datejust 31 Reference #: 178344
Rp. 144,377,144
Professional dealer
90
US
Rolex Explorer 114270 Very good Steel 36mm Automatic
TOP
Rolex Explorer I Black Dial Steel 36MM "F Series" "2004"
Rp. 107,451,243
Free shipping
Professional dealer
1001
JP
Patek Philippe Minute Repeater Very good Red gold 53mm Manual winding
TOP
Patek Philippe Minuten-Repetition neuwertige Schwere 18k Gold...
Rp. 398,581,764
Free shipping
Professional dealer
29
DE
Rolex Datejust 16233 Very good Gold/Steel 36mm Automatic Indonesia, Jakarta Selatan
Rolex Datejust
Rp. 96,007,136
Private Seller
ID
Omega Constellation 168017 Good Gold/Steel 35mm Automatic Indonesia, Jakarta
Omega Constellation
Rp. 17,000,000
Private Seller
ID
Louis Vuitton Q212G Fair Steel 38mm Automatic Indonesia, Batam,
Louis Vuitton Speedy Chronograph Q212G SS Auto Men's Watch(F5195)
Rp. 30,294,305
Private Seller
ID
Omega Constellation 168017 Good Steel 34mm Automatic Indonesia, Jakarta
Omega Constellation
Rp. 13,300,000
Private Seller
ID
Seiko King 5626-7040 Good 35mm Automatic Indonesia, Jakarta
Seiko King Seiko
Rp. 13,100,000
Private Seller
ID
Omega Constellation 168017 Good Steel 35mm Automatic Indonesia, Jakarta
Omega Constellation
Rp. 14,500,000
Private Seller
ID
Hublot Big Bang 44 mm 301.SM.1770.RX Good Steel 42mm Automatic Indonesia, 12220
Hublot Big Bang 42 mm
Rp. 123,905,381
Private Seller
ID
Rolex Submariner Date 16610T Very good Steel 40mm Automatic
Rolex Submariner Date Automatik Edelstahl Herrenuhr Oyster...
Rp. 154,171,705

Sold by Chrono24

DE
Omega Speedmaster Racing 326.30.40.50.03.001 Very good Steel 40mm Automatic
TOP
Omega Speedmaster Racing Reference #: 326.30.40.50.03.001
Rp. 58,630,312
Professional dealer
90
US
Omega Constellation 168.005 Fair Gold/Steel 34.0mm Automatic
TOP
Omega Constellation Cal. 564
Rp. 23,979,798
Professional dealer
16
US
Omega Constellation Ladies 123.20.35.20.58.001 New Gold/Steel 35mm Automatic
TOP
Omega Constellation 123.20.35.20.58.001 CO‑AXIAL 35 MM
Rp. 96,520,152
Professional dealer
862
US
Chopard Mille Miglia 168459-3037 Very good Steel 44mm Automatic
TOP
Chopard Mille Miglia Gran Turismo Chrono Auto Historic...
Rp. 115,846,535
Free shipping
Professional dealer
959
NL
TAG Heuer Carrera CAR5A90.FC6415 New Ceramic 45mm Automatic
TOP
TAG Heuer Carrera Tourbillon
Rp. 210,149,867
Professional dealer
491
CH
Ulysse Nardin A.261 Good Steel 34mm Automatic
TOP
Ulysse Nardin Vintage Chronometer 36000
Rp. 39,758,083
Professional dealer
32
CH
Rolex Lady-Datejust Pearlmaster 80285 New Rose gold 29mm Automatic
TOP
Rolex Lady-Datejust Pearlmaster, 260 diamonds on bezel and...
Rp. 851,958,922
Professional dealer
58
CH
Omega Speedmaster Professional Moonwatch 310.30.42.50.01.001 New Steel 42mm Manual winding Indonesia
Omega Speedmaster Moonwatch Co-Axial Master Chronometer Hesalite
Rp. 129,910,115
Free shipping
Professional dealer
16
SG
Breitling Navitimer World A24322 Very good Steel 46mm Automatic
Breitling Navitimer World GMT Chronograph Automatik Stahl...
Rp. 75,779,313

Sold by Chrono24

DE
Omega Speedmaster Professional Moonwatch 31032425001001 Unworn Steel 42mm Manual winding
Omega Speedmaster Moonwatch 42mm NEW 2021 Ref. 31032425001001
Rp. 108,007,296
Professional dealer
156
IT
Omega Constellation Day-Date 168.029 Good Gold/Steel 35mm Automatic
TOP
Omega Constellation Cal. 751 18K Gold Capped Vintage 1970
Rp. 35,178,187
Professional dealer
16
US
Patek Philippe Nautilus 5711/1R-001 Unworn Rose gold 40mm Automatic
Patek Philippe Nautilus - 5711/1R-001 - 330 Kaliber - German...
Rp. 2,665,167,137
Professional dealer
211
DE
Rolex Datejust 126334 New Steel 41mm Automatic
Rolex 2021 Datejust 41 Blue Index Dial Jubilee NEW 126334...
Rp. 202,934,169
Professional dealer
581
US
Rolex Sea-Dweller 126600 Unworn Steel 43mm Automatic
Rolex 126600 Sea-Dweller 07/2021 LC 100 Single Red
Rp. 250,507,245
Professional dealer
100
DE
Ulysse Nardin Marine Chronometer 41mm 263-66 Very good Steel 41mm Automatic
TOP
Ulysse Nardin Marine Chronometer 41 mm
Rp. 55,985,872
Professional dealer
32
CH
Rolex Datejust 116188 New Yellow gold 36mm Automatic
TOP
Rolex Datejust, new, bezel with 60 diamonds, dial with 10...
Rp. 306,624,073
Professional dealer
58
CH
Rolex Submariner Date 116610LV Very good Steel 40mm Automatic
Rolex Submariner 'Hulk'
Rp. 357,166,315
Professional dealer
15
UK
Omega Seamaster Diver 300 M 210.30.42.20.03.001 Very good Steel 42mm Automatic
Omega Seamaster Diver Stahl Chronometer Ref. 210.30.42.20.03.0...
Rp. 72,295,206

Sold by Chrono24

DE
Omega Speedmaster Professional Moonwatch 31032425001001 Unworn Steel 42mm Manual winding
Omega Speedmaster Moonwatch Double Sapphire 42mm NEW 2020 With...
Rp. 109,749,349
Professional dealer
156
IT
Rolex Datejust 126334 New Steel 41mm Automatic
Rolex Datejust 41mm Fluted Wimbledon Dial Oyster 126334
Rp. 206,671,851
Professional dealer
429
US
Rolex Daytona 116500LN Very good Steel 40mm Automatic
Rolex Daytona - 40mm - White Dial - PANDA - FULLSET- 99% New -...
Rp. 590,556,023
Professional dealer
211
DE
Rolex Sea-Dweller 126600 New Steel 43mm Automatic
Rolex Sea-Dweller SD43 126600 NEW 50th Anniversary
Rp. 230,783,567
Professional dealer
581
US
Rolex Submariner (No Date) 114060 Very good Steel 40mm Automatic
Rolex 114060 LC 100 11/2019 Submariner (No Date) Like New
Rp. 202,949,194
Professional dealer
100
DE
Breitling Superocean Heritage 46 A1732024/B868/152A Good Steel 46mm Automatic
Breitling Superocean Heritage 46 German Delivery black schwarz...
Rp. 50,327,916
Professional dealer
140
DE
Rolex Lady-Datejust Pearlmaster 80319 New White gold 29mm Automatic
TOP
Rolex Lady-Datejust Pearlmaster, new, white gold, bezel set...
Rp. 340,702,430
Professional dealer
58
CH
Rolex GMT-Master II 126710BLNR Very good Steel 40mm Automatic
Rolex GMT-Master II ‘Batman’
Rp. 275,528,300
Professional dealer
15
UK
Omega Globemaster 130.30.39.21.02.001 Very good Steel 39mm Automatic
Omega Constellation Globemaster Co-Axial Ref. 130.30.39.21.02....
Rp. 93,199,844

Sold by Chrono24

DE
Zenith CP.-2 Steel Chronograph
Zenith A. Cairelli Tipo CP-2 Mai Lucidato
Rp. 195,109,954
Professional dealer
156
IT
Rolex Datejust 126334 New Steel 41mm Automatic
Rolex Datejust Wimbledon NEW Jubilee
Rp. 210,336,245
Professional dealer
429
US
Rolex GMT-Master II 126710BLNR New Steel 40mm Automatic
Rolex GMT-Master II - "Batgirl" - 40mm - NEW - New Card -...
Rp. 295,974,833
Professional dealer
211
DE
Rolex Submariner Date 126610LN New Steel 41mm Automatic
Rolex 2021 Submariner Date 126610 LN 41MM NEW
Rp. 226,386,293
Professional dealer
581
US
Omega Seamaster 300 234.30.41.21.01.001 New Steel Automatic
TOP
Omega SEAMASTER 300 CO‑AXIAL MASTER CHRONOMETER 234.30.41.21.0...
Rp. 100,601,226
Professional dealer
91
JP
Breitling Superocean A17360-108 Good Steel Automatic
Breitling Superocean 42 Automatic Service black schwarz A17360...
Rp. 34,649,437
Professional dealer
140
DE
Breguet Reine de Naples 8967ST/V8/J50 New Steel 43mm Automatic
TOP
Breguet Reine de Naples, new, blue mother-of-pearl dial, blue...
Rp. 202,847,362
Professional dealer
58
CH
Rolex Sea-Dweller 126603 Very good Gold/Steel 43mm Automatic
Rolex Sea-Dweller 43 'Bi-Colour'
Rp. 295,937,804
Professional dealer
15
UK
Omega Seamaster Planet Ocean Chronograph 232.90.46.51.03.001 Very good Titanium 45.5mm Automatic
Omega Seamaster Planet Ocean 600M Co-Axial Ref. 232.90.46.51.0...
Rp. 101,910,110

Sold by Chrono24

DE
Tudor Black Bay Chrono M79360N-0002 New Steel 41mm Automatic
Tudor Black Bay Chrono 2021
Rp. 95,992,479
Professional dealer
468
US
Rolex Submariner (No Date) 124060 New Steel 41mm Automatic
Rolex Submariner No Date 41mm 124060 2021 NEW
Rp. 200,588,956
Professional dealer
429
US
Rolex Daytona 116500LN New Steel 40mm Automatic
Rolex Daytona - 40mm - Black Dial - FULLSET - NEW - New Card -...
Rp. 557,282,807
Professional dealer
211
DE
Rolex Datejust 126334 New Steel 41mm Automatic
Rolex 2021 Datejust 41 Slate / Rhodium Dial Jubilee NEW 126334...
Rp. 197,804,016
Professional dealer
581
US
Omega Speedmaster HB-SIA 321.92.44.52.01.003 Unworn Titanium 44.25mm Automatic
Omega Speedmaster Hb-sia Gmt Chronograph Co-Axial GMT
Rp. 99,524,955
Professional dealer
154
US
Omega Seamaster Diver 300 M 210.30.42.20.01.001 New Steel 42mm Automatic
Omega Seamaster Diver 300 M
Rp. 72,295,206
Professional dealer
273
LT
Breitling NB0434E5/BE94 New Carbon 45mm Automatic
TOP
Breitling for Bentley GMT, new, chronograph, carbon case and...
Rp. 198,952,693
Professional dealer
58
CH
Rolex Sea-Dweller 4000 16600 New Steel 40mm Automatic
Rolex Sea-Dweller 'NOS'
Rp. 295,937,804
Professional dealer
15
UK
Omega Seamaster Planet Ocean 232.30.42.21.01.001 Very good Steel 42mm Automatic
Omega Seamaster Planet Ocean 600M Automatik Ref. 232.30.42.21....
Rp. 82,747,525

Sold by Chrono24

DE
Rolex Submariner (No Date) 124060 Very good Steel 41mm Automatic
Rolex Submariner (No Date) 124060 Pristine Condition
Rp. 194,198,252
Professional dealer
468
US
Rolex Submariner Date 126610LN New Steel 41mm Automatic
Rolex Submariner Date NEW 126610LN 2021 Edition
Rp. 223,088,338
Professional dealer
429
US
Rolex GMT-Master II 126711CHNR New Gold/Steel 40mm Automatic
Rolex GMT-Master II - "Rotbeer" - Stahl/Rose - NEW- New Card-...
Rp. 329,073,843
Professional dealer
211
DE
Rolex Submariner (No Date) 124060 New Steel 41mm Automatic
Rolex 2021 Submariner No Date 124060 41MM NEW
Rp. 203,667,047
Professional dealer
581
US
Rolex Oyster Perpetual Date 15233 Unworn Gold/Steel 34mm Automatic
Rolex Date
Rp. 131,185,324
Professional dealer
154
US
Breitling Chrono Cockpit B30012 Very good Gold/Steel 37mm Automatic
Breitling Chrono Cockpit | Blue Dial | 
Rp. 32,924,805
Professional dealer
131
DE
Hublot Classic Fusion Ultra-Thin 545.NX.1270.LR New Titanium 42mm Manual winding
TOP
Hublot Classic Fusion ultra-thin, new, 42mm, titanium, manual...
Rp. 129,010,923
Professional dealer
58
CH

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.