Double tap near 12 oclock to unlock watch. Single tap to relock.

Tap T display to choose 12hr time, 24hr time.

Tap M to change weather, calendar, fitness and chrono modes.

Tap HEART icon for heart rate sensor.

Tap S and R to operate chrono. Tap weather display for update.

Tap A for dim settings.

Tap U and U- for Ucolor.

Tap F to cycle through 4 level dark filter.

Shows watch and phone battery level.