Mido Caliber 80 Si

The Mido Caliber 80 Si is an automatic movement based on the ETA C07.111, part of the Powermatic 80 family. It features a Nivachron™ balance spring made from a titanium-based alloy, which provides resistance to magnetic fields while maintaining robustness against impacts and aging. This construction delivers greater precision and durability compared to conventional balance springs. The movement remains in production and is also known as the Mido 80 Nivachron.