Using the Deploy headlamp is a breeze. First, charge the battery using the USB - C cable provided. It charges quickly, so you don't have to wait long. When you're ready to use it, put it on your head. The flexible wing band will adjust to fit your head comfortably. Press the button on the headlamp to turn it on and adjust the angle of the light according to your needs. Whether you're running uphill or on a flat surface, the light will follow your movement. For maintenance, keep the headlamp clean by wiping it with a soft cloth. Avoid exposing it to extreme temperatures or moisture. If you're not using it for a long time, make sure the battery has some charge in it to keep it in good condition.