I already had a Suunto watch for running (T3) with a foot pod, so I naturally bought a bike pod when I started mountain biking. I found the reliability of the brand, you just have to calibrate the pod, according to the diameter of the front wheel. The pod is attached to the fork, a screw magnet within. Real-time speed, average over a given distance on the total distance, recording the top speed ... The possibilities are the same as with a foot pod. It comes with an adapter to attach the watch on the hanger, but I've never used it, I prefer to keep the wrist.