Genuine Mazda Smart Key - 3 Button Used in CX-8 - Year: Registered in Reiwa 3 (2021) - Model: 3DA-KG5P The button lights up red when pressed. Battery level is unknown. As I am not a specialist, I cannot provide support for re-setting. It has not been initialized. Everything shown in the images is included. Please understand that this is a used electrical component and accept no claims and no returns. Thank you very much.