This product is a radiation detector, made of solid materials, safe and firm. It can last for a long time without being easily . The product is a practical emf reader that can bring you more convenience, allowing you to have a more comfortable experience. Features -Color:Black -Material:Plastic -Size:15.00X5.30X3.00cm/5.89X2.08X1.18in Range: 0-20+ Battery: 9V Accuracy: 5% -Accurate measurement of the intensity of electromagnetic radiation and magnetic field radiation. -Compact and portable design for convenient carrying and on-the-go radiation detection. -This radiation detector is suitable for various settings such as homes, offices, schools, and more. -Clear display screen emf reader for easy visualization of radiation intensity. -Simple one-button operation emf meter for user-friendly use without special knowledge. Package list: 2 x radiation detector