Using the Makita DML802B flashlight is a breeze. First, make sure you have a fully charged 18V LXT® Lithium-Ion battery (sold separately). Insert the battery into the flashlight, and you're ready to go. You can adjust the 12 - position pivoting head to direct the light where you need it, with positive stops from 60º - 110º. The metal hang - hook is handy for hanging the flashlight up when you need your hands free. When it comes to maintenance, keep the flashlight clean. You can use a dry or slightly damp cloth to wipe it down. Avoid using harsh chemicals as they may damage the rubberized soft grip or the aluminum head. Also, always use genuine Makita batteries and chargers to ensure the best performance and safety. Remember, the battery and charger are sold separately. This flashlight comes with a 3 - year limited warranty, so if you have any issues during that time, reach out to Makita for support.