Weaknesses in the stopwatch

A digital clock with the usual good quality Casio. Use them to swim and there currently measurement. What I do not like the stop function, which is as follows: at start running with the top large digits the stopwatch including Zehtnelsekunden and underneath, with the small numbers, the same stop time, but only with minutes and seconds. To stop now the time that large numbers run up and on, you can not stop this. The stop time can only be read down to the small digits, minute and second. Since I do not exaggerate in Sport "tenths of a second area", which is OK, but was not erwarungsgemäß. If you simply but everything wissen.Ansonsten bene.