LAP to record an interval during open water swimming.
Before starting a pool swimming activity, follow the on-screen instructions to select your pool size or enter a custom size.
The watch measures and records distance by completed pool lengths. The pool size must be correct to display accurate distance. The next time you start a pool swimming activity, the watch uses this pool size. You can hold MENU, select the activity settings, and select Pool Size to change the size.
For accurate results, swim the entire pool length, and use one stroke type for the entire length. Pause the activity timer when resting.