Wireless headphone: Play MMC / SD card, MP3/WMA files stored LCD ... a computer headsetHigh-quality speakers and sound chamber designed to ensure high-fidelity, CD quality sound effectsRechargeable polymer battery, convenient, practical,Up ... -45 degree CelsiusOperating humidity15-85 RHNet weight190gDimensions20*15*90mm Potable wireless headphone 5hours operation