Power values, heart rate, GPS navigation and more ? Cycling computers offer more functions, numbers and data than ever before. Five current models from 170 euros in a comparison test

Kilometres, speed, riding time, altitude, power, heart rate - modern top cycling computers offer a wide range of live data, navigation options and analysis possibilities. Cycling is measurable, it can be a science. Many riders want all these numbers and data - others don't need them. But cycling computers also show the values that can motivate and drive you, that make dream tours possible to experience and save. We tested five models in different price ranges from 170 to 750 euros - which devices and functions do you really need?