Tab 12 o’clock to change the color of the numbers and glow behind tourbillon. Tab the center of the digital display to change color. Tab the center of the watch to change the color of the stopwatch millisecond hand (battery indicator in dimmed mode). Tab the right side of the digital display to toggle different indicators. Tab the left side of the digital display to toggle between digital time and stopwatch. Tab 8 o’clock to start/stop stopwatch. Tab 4 o’clock to reset stopwatch. Hope you like it!