Travel Lockout Mode Vis or Urban Series Lights.
A way to lock your light off so that it will not accidentally turn on in your bag. When your light is off and unplugged from the charger, press and hold the power button for about 4 seconds. The indicator light will blink red 3 times. To unlock press and hold the power button for about 4 seconds. The indicator light will blink green 3 times.