V12FREE is battery-powered portable sound systems featuring a powerful 400W amplifier, a built-in 3-channel mixer with effect and tone controls and an advanced MP3 player with BLUETOOTH connectivity, featuring a large back-lit LCD display and able to play songs from SD card, USB MEMORY STICK or directly from your smartphone or tablet. They includes also two USB inputs for connecting PROEL U24H or U24B 2.4GHz Wireless Microphones with USB receiver, available both with handheld and bodypack transm