... card readerFM radio ,covering,cumpus radio band,Suitable for general radio and campus radio listening3.5mm audio output ... designed to ensure high-fidelity, CD quality sound effectsRechargeable polymer battery, convenient, practical,Up to 8-10 hours of practical ... CelsiusOperating humidity15-85 RHNet weight190gDimensions20*15*90mm Low price Potable wireless bluetooth headset 5hours operation