Using the Ravemen CR800 is a breeze. First, attach it to your helmet using the mounting bracket. To power it on, use the wired remote control. You can easily change between different light modes while you're on the move. If you need a hand - held light, just detach it from the bracket. You can connect it to a powerbank when you're out and about to keep it running. When it's time to charge, use the provided USB cable. The charging lights will tell you when it's fully charged. For maintenance, keep it clean and dry. Avoid dropping it or exposing it to extreme temperatures. That way, your CR800 will serve you well for a long time.