The device automatically returns to the clock screen and locks, after 60 seconds of inactivity. To unlock the screen, quickly tap the lower part of the touch ring three times. To lock the screen, and prevent the watch from automatically returning to the clock screen after 60 seconds, quickly tap three times on the lower part of the touch ring at the 6 o'clock position. You will feel a vibration and see a lock appear on the screen. To unlock, tap the lower part of the touch ring three times again.
Only the touch ring around the display responds to touch. The touch interface does not function when it is wet, wipe the glass dry to enable it again.