7. Marking an event during your workout

Marking events allows you to bookmark specific moments in your workout — when you were starting or stopping laps, or when you felt significant exertion or an unusual amount of strain on your heart.

1. Press the blue button on your Frontier X3 device one time to mark an event during exercise.

2. The recording continues uninterrupted after marking an event.

3. Marked events display in the Frontier X app, on your Activity Summary Graphs, in the form of vertical blue lines.