Delved through the menu's but can't suss this one out myself.
I've get several data screen's setup for running, and at random intervals I've found it switching to one of the data screens (the second one from top if it makes any difference) without any input from me. Often accompanied by the colours inverting. It's not changing at set distances (i.e. it's not the standard 1km lap summary) but I don't know if it's a time thing.
Any idea why it's changing and how I can stop it doing so?