The ETA 2768 is a mechanical watch movement that was produced from 1937 to 1970, with over 3.5 million units manufactured during that time period. This movement was utilized in a range of chrono mechanisms, and due to their interchangeable parts, occasionally series were produced with components from different calibers. The ETA 2768 shares minor differences with the Landeron 81, and modified parts can be interchanged between these calibers. Additionally, the ETA 2768 features a manual-wind chronograph with a 60-second counter, as well as a 30/45-minute counter that is cam switched. Other functions include sub seconds, a tag function with a pusher at 10 o'clock, a date hand with a pusher at 9 o'clock, a month function with a pusher at 2:30 o'clock, and a moon phase function with a pusher at 8 o'clock.