This is a light-up headband with a Minnie Mouse ear and crown design. It's a plastic, one-size-fits-all item purchased at a night market. I haven't used it very often, so the batteries still have some life left. When the button doesn't respond well, pressing it firmly usually works. There are three light modes: fast flashing, normal flashing, and steady on. It can be easily disassembled, and the inside has three button batteries. If you're able to replace the batteries, it seems like it would be great for events like Halloween and Christmas. It appears that the three button batteries are covered with a transparent plastic film to keep them from separating. Even without the lights, it's still cute for events like Halloween. Thank you for looking.