... ,FCC,RHOS promotional gift card MP3 playerPromotional gift Card MP3 Player •Media format: MP3, WMA, WAV•Each with an earphone and ... •Battery: Built-in Rechargeable lithium-ion polymer•Interface: USB2.0 high speed •Working humidity: 20% ~90%(40C)•Storage humidity: 20% ~ ... /9X/ME/NT4.0,WINDOWS vistaFunction characteristics USB InterfaceUSB2.0 high speed Capacity128MB, 256MB, 512MB, 1GB, 2GB,4GB,16GB,32GB( ...