Chris Bumstead Hermle Quartz Battery Movement Troubleshooting Old and exhausted batteries are the primary cause for the movement to malfunction while keeping time, playing a melody, or swinging the pendulum (on some
HERMLE Uhren - Uhrenwerkstatt M. Schneider
Amazon.com: Hermle Buffalo II World Time Clock : Home & Kitchen
Modern clock with quartz movement from Hermle - Quartz - Nr. HE 71002-N42200