The heart rate and health tracker Mio Slice Band is a fitness tracking system which tracks the wearer’s heart rate over the whole day and evaluates it by means of a Personal Activity Intelligence app (PAI). The PAI algorithm encourages users to partake in moderate to high-intensity exercise, by means of a simple number system, in order to support a healthier lifestyle. With a user-friendly one-button input, the Mio Slice Band, made of high-quality satin aluminium and stainless steel, offers an intuitive user experience.