-Tap center of hands to make them temporarily disappear courtesy Ram Mor. -TAP 9 oclock- To cycle through 4 levels of additional dark filters. Good for when display is too bright in a dark setting. 4th Tap is complete darkness Theater Mode. -Tap AMBIENT for dim options. Tap MODE to choose between 24 HOUR TIME, 3 TIME ZONES, CURRENT TEMPERATURE with last update time, STOP WATCH, STEP COUNTER. Tap START RESET, to operate stopwatch.