USB laptop desktop computer mini speaker

Frequency response range; 100HZ-20KHZ
Output power; 2*3W
Signal to noise ratio; ≥70db
Power supply mode; USB direct power supply
Channel; 2
Play time; unlimited
Extended storage; not supported
Bluetooth protocol; no Bluetooth
Number of speakers; 2
Operation mode; button
Play format; MP3, WMA, WAV, FLC, APE
Shell material; plastic
Speaker adjustment method; button
Is there a radio function;
Box material; plastic
Appearance size; 20cm*2.8cm*2.7cm
Packing list; audio, manual
USB cable length; 900MM