Hi Everyone, Juststarting out with my TomTom Multi-Sport GPS Watch with chest HRM unit. First run out & I set it to zone 'Speed', but in 1st couple of miles I was getting constant buzzing from the watch, a circular target pattern/icon on screen flashed up, followed shortly after by a large white arrow pointing up. Couldn't fathom at time if this meant I should run faster to increase my heart rate OR if it was indicating that my heart rate was up too much and I should slow down! After a bit of experimentation during the run I concluded it was the former. However, looking through the manuals available on the TomTom website, I cannot see guidance on this aspect of the HRM & its use. Not sure if I'm right. Can someone point me at a guide or webpage explaining these screens/icons.