... hours 3) Music format: MP3,WMA 4) MMC card and SD card Muli-function card headset/ cheap ... specificationsItemSpecificationSupport Memory Card MMC card,SD card,TFcard(SD card adapter required),minMusic formatMP3,WMASupport the maximum memory card capacity32GBSupport ... hours of continuous saturationCharging time3-4hoursUSBUSB2.0Support Computer SystemWindows98,Win2000Operating temperature-10-45 degree ...