Using your Lezyne KTV Drive front cycling light is a breeze. First, make sure it's fully charged using the integrated USB stick. You can charge it whenever you have access to a USB port. To turn the light on, simply press the power button. Cycle through the five output modes by pressing the button again. For maximum visibility during the day, use the 200 - lumen Daytime Flash mode. When it comes to maintenance, since it's IPX7 waterproof, you don't have to worry too much about getting it wet during a ride. However, after a really muddy or dirty ride, use a damp cloth to wipe it clean. Keep it in a dry place when not in use to prolong its lifespan. Don't expose it to extreme temperatures, as this can affect the battery performance and the light's overall functionality.