1.headset 2.Micro SD card music headphone 3.FM Radio 4.wired headphone 5. rechargeable Li bettery Headphone KB-10001, Pause/ Play /MODE (Micro SD to FM Switch)2, Last song, next road frequency search3, Next song, last road frequency search4, Volume –5, Volume +II. Specifications Support format:Mp3FM frequency range:87.5 MHZ—108MHZSupport capacity:≤16GSNR:≥85dbTHD:<1%Impedance:32 ΩFrequency ...