This popular optical armband-heartrate monitor is very good in all respects, it is just a bit too enthusiastic. The on/off switch is beneath the rubber surface, and it doesn’t take much pressure to activate it. All good when you actually want to switch it on, but not when it is in a gym bag or in a pocket.

It was a hot day, but how hot was a guess, because there was no reading from the Garmin Tempe sensor. Probably an empty battery. But after replacing that, it was empty again in a few hours. Was it a bad battery? Let’s try another. But that one was also depleted in no time.

The Milestone Pod is an affordable foot pod that displays various advanced running dynamics parameters in the Milestone app. There may be much debate about the usefulness -or not- of advanced running dynamics, but let’s just say more data is more fun.