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
Which is more attractive to you? Mecha-Quartz? Or Solar Powered? - The Dive Watch Connection
Dan Henry 1937 Dress Chronograph instructions Seiko VK61 meca-quartz