Grand Seiko SBGV009

Timing Data

The SBGV009 has been undergoing a year-long timing test and was performing admirably until a summer trip to the UK, whereupon the colder conditions set the watch running fast. Depending on which spreadsheet I use, the watch is either just under spec. or just over. The older spreadsheet, having been tracking the watch's performance since January, gives the more accurate SPY value, at just under spec..

This watch has also begun temperature tests against a high accuracy time reference, as described in my methodology page.

I still have several pages of results which need analysis, however since this watch has been sold (with a very heavy heart) there will be no new data coming in.