What do the symbols on my Philips Head Pro mean?

When the battery is low, the bottom charging light flashes orange. After turning off the head shaver, the light will continue flashing orange for a few seconds to indicate a low battery.

To turn on the travel lock:
Press and hold the power button for 3 seconds. You will see the 3 charging lights light up one after the other. The travel lock light will turn solid for a moment, then start flashing as the head shaver turns off. If you try to turn the device on, the travel lock light will flash to show the head shaver is locked.

To turn off the travel lock:
Press and hold the power button again for 3 seconds. The 3 charging lights will light up one after the other. The travel lock light will quickly turn solid white, and then the device will turn on.