... stereo quality built-in headphone 3. Full range of FM channels4. 7 colors PC lens for option (6 ... .5*4458.5*7.5*18.5191 THB468 SpecificationsFunctionMP3+FM RadioStyleSporting, leisure, amusementSensorActionSupport formatsupport MP3,WMA,WMV,ASF ... source220mAh battery Battery TypeRechargeable lithium-ion polymer,charged via USB connection or optional external chargerBattery lifeplaying time ≥300 Minutes ...