Helgray - Powered by the Time Module (Seiko) VK64 meca-quartz chronograph movement, the Silverstone Green is a timeless piece. https://www.helgray.com/collections/silverstone/products/silverstone-green #Silverstone #Green #Helgray | Facebook
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NOS SEIKO SSB003P1 PANDA Chronograph MECA-QUARTZ Newman Daytona Alpha Tribeca | eBay
Meca-quartz chrono is losing time, anything I can do? | WatchUSeek Watch Forums