How to use: Simply turn on the headlamp by pressing the power button. You can adjust the brightness according to your needs. Notice: Don't expose it to extremely high or low temperatures for a long time. When using alkaline batteries, make sure to insert them correctly. Maintenance: Clean the headlamp with a soft, dry cloth regularly. If it gets wet, dry it thoroughly before storing it. This way, your headlamp will serve you well for a long time.