Professional Jeweler Archive: Chronometer Tests

January 2001

Timepieces/Data & Statistics


Chronometer Tests

Record number of watches are tested for precision certification


The Official Swiss Chronometer Testing Agency (COSC) reports record increases in the number of timepieces submitted for testing certification in 1999. Watch companies often include the results and COSC certificates to validate claims of the strict precision required before a watch can be called a chronometer. Of the record 905,499 mechanical movements and 76,442 quartz movements tested in 1999, 35,405 failed. Here are the companies with the highest number of watches tested.

Brand
# of COSC Certificates
Rolex
584,607
Omega
137,750
Breitling
127,659
Bulgari
22,601
TAG Heuer
13,342
Panerai
12,826
Vacheron Constantin
5,152
Tissot
4,838
Montega
4,186
Concord
3,319
Ikepod
3,287
Zenith
2,481
Ebel
2,456
Swatch
1,957
Mühle Glashütte
1,468
Ventura
1,384
Ulysse Nardin
1,280
Other
51,348

Copyright © 2001 by Bond Communications