How long does 9F quartz last? – Pursuantmedia
As a simple point of comparison, your typical run-of-the-mill quartz movement is rated to about 15 seconds a month. But the quartz crystal is just the tip of the iceberg. What is the cheapest Grand Seiko? The SBGX059 (pictured) and the black dial SBGX061 are the oldest Grand Seiko quartz models still in production and are also the most ...
