https://www.grand-seiko.com/us-en/collections/movement/springdrive https://www.grand-seiko.com/us-en/collections/movement/sprin... The Spring Drive is the pinn

https://www.grand-seiko.com/us-en/collections/movement/springdrive https://www.grand-seiko.com/us-en/collections/movement/sprin... The Spring Drive is the pinnacle of electromechanical watches so far, and it’s more mechanical than electronic. “if all seven billion inhabitants on Earth wore a Spring Drive watch, their total power consumption would be just 175 watts” https://www.ablogtowatch.com/history-seiko-spring-drive-movement/2/ https://www.ablogtowatch.com/history-seiko-spring-drive-move...