I bought this clock cause I wanted to know the distance I swim and how may calories it takes. Well, I actially run in water, so it´s not swimming like usual swimming but the clock is all confused about this. If I go 300 metres (50m pool), the clock says anything between 450-900, there´s no logic at all. I guess this clock is not for running in the water. I´m very disappointed about that, totally useless in the pool for me. Do you have any ideas if I can do something about this?