The Osco 72 watch movement utilizes a pin-lever escapement and is primarily used in the Amigo models. It offers a timer function with the ability to measure up to 60 seconds with an accuracy of 0.2 seconds, as well as 30 minutes of timing. The timer can be conveniently operated using a rocker mechanism. Additionally, there is an option to adjust the timer for 30-second accuracy and 15-minute timing. The movement also includes an addition timer and features a flyback function. It is manually wound with a back winder and has a sweep second hand. The Osco 72 movement was commonly employed around 1979.