... Life:8hours 5.Certificate:CE,FCC,ROHS product name:card music player,card mp3 player,card mp3 Features System RequirementsHardwareIBM PC or compatible PC, Notebook ... aboveDriver installationOnly required for Windows98/SE Function characteristicsUSB InterfaceUSB2.0 high speedCapacity128MB, 256MB, 512MB, 1GB, 2GB,4GB,16GB( ... according to clients requirementCertificate: CE,FCC,ROHS card mp3 player