I have been given one of these, but unfortunately there is no manual with it and the giver doesn't know how it works! I have tried to go into Timex manuals but it won't open. I am not fussed about setting zones etc. All I want to do is to get distance, time and average pace. I do know how to switch it on, but don't know which setting to put it on and how to retrieve data. Any help would be greatly appreciated.