USB laptop desktop computer mini speaker

 Connection method; USB Frequency response range; 100HZ-20KHZOutput power; 2*3WSignal to noise ratio; ≥70dbPower supply mode; USB direct power supplyChannel; 2Play time; unlimitedExtended storage; not supportedBluetooth protocol; no BluetoothNumber of speakers; 2Operation mode; buttonPlay format; MP3, WMA, WAV, FLC, APEShell material; plasticSpeaker adjustment method; buttonIs there a radio function;Box material; plasticAppearance size; 20cm*2.8cm*2.7cmPacking list; audio, manualUSB cable length; 900MM window.adminAccountId=230896485;