By default the sleep timer of the Shake Awake feature is set to 10 minutes. You can adjust this time by holding the “+” brightness button for 10 seconds. Press and releases either brightness button to set the time, the LED will blink 1 time for 10 minutes, 2 times for 1 hour, 3 times for 12 hours, or 4 times to disable sleep mode. Then press and hold both brightness buttons to save the time setting and power off the sight.