2.1ch multimedia bluetooth speaker / bluetooth operation range within 10meters usb & sd slot / fm radio function / led display read mp3 format / powerful amplifier circuit / hi-fi surround sound / super subwoofer input control: vol+- / ch+- / play / pause / frequency response: 40hz -150hz, 150hz-20khz fm frequency: 87-108mhz / full function remote control / voltage: 220-240v 50/60hz output power: 1*100w + 2*20w