2 1 channel multimedia desktop computer speaker

{"cid":"91219621","title":"2.1 Channel Active Multimedia Desktop Computer Speaker 4\" Subwoofer 3\" Full Range*2 BT","imgUrl":"https:\/\/img.chinax.com\/nimg\/3e\/0e\/9a3d2c5c57bfc348712cc5b6eb38-200x200-1.jpg","attrs":{"Price":"$14.30\/sets 1000-2999 sets","Brand Name":"Coomaer\/OEM","Model Number":"H-911","Minimum Order Quantity":"1000 sets","Power Source":"AC, DC","Support APP":"NO","Battery":"NO","Number of Loudspeaker Enclosure":"3","Audio Crossover":"Three-Way","Woofer Size\/Full-Range Size":"4\"","Material":"Wood","Waterproof":"NO","Communication":"AUX, RCA, usb, Audio Line","PMPO":"30W","Support Memory Card":"Yes","Speaker Type":"Subwoofer","Output Power":"30W","Remote Control":"Yes","Cabinet Material":"Wood","Frequency Range":"20Hz-20KHz","Display Screen":"Yes","Built-in Microphone":"NO","Tweeter Size":"3.5\"","Private Mold":"Yes","Type":"Active","Use":"HOME THEATRE, Portable Audio Player, Mobile Phone, Karaoke Player, COMPUTER","Channels":"3 (2.1)","Special Feature":"PORTABLE","Place of Origin":"China","Product Name":"BT speaker; multimedia speaker;home theatre speaker,2.1 woofer speaker","Feature":"USB, SD, RCA IN, FM, Blue tooth, Remote","Power supply":"AC100-240V","Output power":"20W+5W * 2","Speaker Unit":"4\"Subwoofer + 3\"full range*2","Frequency Response":"20Hz-20KHz","Version":"AC\/AC+DC\/AC+BT\/AC+DC+BT","Transformer":"Digital transformer","Usage":"PC\/MP3\/Mobilephone\/Tablet\/Laptop\/Audio Devices"}}