The stealth 50 is a simple power meter that is ant compatible so it works with third party power heart rate and cadence sensors track basic cycling data and combine with power heart rate and cadence data to target and reach training goals upload ride data to web based training sites such as cateyeatlascom strava and trainingpeaks where you can visualize your activity analyze performance and share your ride other features include a full time backlight auto stopstart and programmabl