Unopened item. It's a gift and has a sticker on it, so I haven't checked the contents. A radio kit for adults with magnetic field detection function. - Brand: Gakken - Product Name: Otona no Kagaku Magnetic Field Detection Crystal Radio - Function: Radio with magnetic field detection function - Series: Otona no Kagaku Series (Adult Science Series) - Target Age: Adults - Power Source: No batteries required - Description: Receives radio waves with a loop antenna Compactly packaged, and because of its size, the buyer is responsible for shipping costs.