Interface type ：USB
The connection method ：3.5mm audio jack
Battery capacity ：750
The power supply mode ：Built in lithium battery
Frequency response range ：40Hz-20KHz
The output power ：3w
Signal to noise ratio：≥70db
Vocal tract：2.1
Bluetooth protocol ：2.1
Shell material ：Plastic
Appearance size ：122*100*100（mm）
Display screen：No
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