Custom build seiko mod - royal oak black chronograph VK63 meca quartz – Thewatchcollector007
WTS] Custom built watch with Seiko VK63 movement - Speedmaster homage | WatchCharts
Mercer released the Brigadier Chronograph model not long ago which consisted of a custom case design and tons of quality specifications. Brigadier Chronograph houses a fantastic Seiko VK63 mecha-quartz movement. : r/MicrobrandWatches