Sporting Portable Mini Speaker with MICRO SD card 1.built-in MICRO SD/lithium battery. 2.Certificate: FCC,CE,ROSH Sporting ... Portable Mini Speaker with MICRO SD card,portable mini speaker, mp3 mini speaker Specification: Connect playing ... 1000MAFunctions:Digital amplifier, built-in MICRO SD/lithium battery, decoded play function. TF card Packing Information: Product Size 81.5* ...