Flashing pet tag to improve visibility in the dark. - Function: Flashing pet tag - Battery: Included Especially recommended for black or brown dogs that are difficult to see in the dark. The flashing light improves visibility from the surroundings during night walks. You can write your pet's name and contact information on the ID card and set it, which is helpful if your pet gets lost. Thank you for viewing. Although it is new, it has been stored at home, so please understand and purchase if you can. #dog #lostdog #pet