The rotor spins freely, winds the watch, it ticks away for a few seconds but then stops. Balance is good and secure.Excellent piece for repair projects or to take parts from. To receive updates about new listings, special offers and upcoming stock. We get new stock all the time and list several times a week! The item "Seiko 6105a Automatic Watch Movement for Parts, Good Balance, HTF (S92)" is in sale since Monday, June 7, 2021. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Parts, Tools & Guides\Parts\Movements". The seller is "vintagewatchpart" and is located in Shrewsbury. This item can be shipped worldwide.