Card reader portable speaker with FM Radio,Alarm Clock and built-in ... USB flash, MP3,WMA Built-in Battery mini portable Speaker with SD/MMC/USB,FM Radio and Alarm clockFeatures ... digital amplifier (3W x 2) 2 inch high fidelity speaker Digital volume control Built-in 600mA lithium ion battery, can ... Technical Specifications Output Power: (RMS) 3.0W x 2 Speaker: 4 Euro 5 W Input Sensitivity: AUX 450mV FM ...