I just bought this new watch. I'm just wondering, how to work it. I want to know how to show your lap time as you run. Lets say you run 400m in 1 minute then you run the 2nd 400m in 1 minute 2 seconds. When I push the lap split time it shows the total time for both laps. What I want to know is the time for each 400m to see whether I am running negative or positive times. Can anyone help?