... connections your MP3,MP4,mobile,computer,IPOD,PSP,CD etc;3.3-4 hours high-power, high-fidelity full-range speakers, ... (within magnetic) portable memory card mini speakers specification: * Speaker output: 3 W * Speaker frequency: 80 - 200 KHz * Noise: >85dB * LED brightness: ... : DC5V/500MA * Working temp:-10 to +50 degrees * Connection: 3.5mm jack In, Micro USB port * Flash memory (internal + external ...