Using this metal detector is easy. First, make sure you have 3 AA batteries (not included) and insert them into the detector. Then, extend the tube to a suitable length, up to 50cm long. Turn on the detector and start exploring areas where you think there might be metal objects. When the detector senses metal, the digital LCD screen will show it and give voice tips. It's lightweight and can be held in your hand comfortably. When you're done using it, turn it off and store it in a dry place. Remember to remove the batteries if you won't use it for a long time to prevent damage. This detector is designed for kids aged 8 and up, so make sure young users use it under proper supervision.