Mio cyclo 305 heart rate and cadence gps bicycle navigation the mio cyclo 305 heart rate and cadence gps bicycle navigation is an easy to use bike navigation device with european bike maps pre installed by simply entering a start and finish points into the gps it can calculate a route for you the device benefits from being able to navigate to a postcode or street name and can then feed back your performance by measuring time speed distance calorie consumption and more heart rate an