I set up my PD1644 (Seiko vk63) 15 days ago and still running + - 0 seconds. I'm amazed how accurate this movement is. Is it normal? : r/ChineseWatches
SEIKO VK63 Chronograph Watch Movement VK63A - Gifts-You.com eShop
WTS] Custom built watch with Seiko VK63 movement - Daytona homage : r/Watchexchange
VK63 Movement - Watch-Modz
Seiko VK63 Ocean Blue Chronograph – Seiko Creations
SEIKO VK63 Chrono issue? | WatchCrunch
Chronograph watch movement VK63 Seiko SII Hattori - Original Seiko Hattori quartz movements
Seikomod Black Daytona Chronograph Quartz Movement VK63 - mheewatchshop : Inspired by LnwShop.com
A Look at Some of Seiko's Best Movements (& the Watches They Fuel) - Geckota
Premium Vk Series Chronograph Quartz Movement Vk64-6h Vk63a Vk83 Vk67 Vk73a Mod Replace Mechanism Japan Original With Battery - Repair Tools & Kits - AliExpress
Chronograph watch movement VK63 Seiko SII Hattori - Original Seiko Hattori quartz movements