... ,Do not go out is just know that Built-in FM radio function8,Can be replace lithium electricity,power life uninterrupted,singing ... or songs at any time 9,One of the speakers can make you enjoy music by ... , mobile phone ,MP3, MP4 and other audio sourceMini Speaker Supports FM radio function Rated Power: 3W Speaker unit: 52mm, 4ΩFrequence response ...