... reader portable speaker with FM Radio,Alarm Clock and built-in 600mAh battery,SD/MMC/MS,USB flash, ... ,WMA Built-in Battery mini portable Speaker with SD/MMC/USB,FM Radio and Alarm clockFeatures Simple ... / MP3 player, audio players and other music FM radio function Support NAND FLASH / SPI FLASH Support FAT16 ... -in 600mA lithium ion battery, can play about four hours battery life (battery is low, the top ...