I swim once a week in a 16 mtr. Basin least 1000mtr. This should be relaxing for me and I do not want to "burden" myself with the track counting. This is exactly what the Timex is perfect, at the end of a tired track button and the clock continues to count. After my failure with the "Sigma stopwatch SC6.12" (do not use in water) exactly what I need. The display is large enough and also to read unaided. Addendum 05.2015: Now I swim min.1000mtr every 2nd day. Time after 2 years then gave the battery on the mind. The battery change was performed for little money at a store in Germany and at the same time a leak test after installation .. Now everything is running like new and no water penetrates !!!