There are three types of cyclometers: wired, wireless and GPS. The biggest differences between them are the features they offer i.e. speed, distance, heart rate, location, pedalling cadence, ascent etc, and the accuracy of that information. Generally, the more you pay, the better the cyclometer will be.
1/ WIRED CYCLOMETERS
If you’re looking for an inexpensive entry-level cyclometer, go for a wired model. The wire links the cyclometer to a magnetic sensor and comes with basic functions such as your current speed, distance and time. It’s less costly than a wireless version and perfect for riding around town or in the countryside.
2/ WIRELESS CYCLOMETERS
The advantage of wireless cyclometers is that they are easy to install on a range of different bikes. It’s particularly well suited to mountain biking as riders won’t have to worry about the suspension or branches catching on the wires.
3/ GPS CYCLOMETERS
While classic cyclometers use a small sensor on the wheel to measure speed, distance and vertical climb, GPS models use a satellite. Thanks to this system, the data shown is more reliable and precise.
The other advantage of the GPS cyclometer is the option to programme in your route, so you no longer have to follow road signs or worry about getting lost – most models come with a map. There is a drawback though – often they’re heavier than classic cyclometers.