New in box, sealed! #supplier warranty #payment on delivery Function: electronic sound, sound change, 12 special effects, multiple effect modes, reverb size adjustment, microphone volume adjustment, high and middle bass adjustment, accompaniment volume adjustment, monitor volume adjustment (ie ear return function).

Support mobile phone computer use, support separate headset use, multiple connection methods: single mobile phone karaoke live broadcast, dual mobile phone live broadcast, mobile phone computer live broadcast, single computer live broadcast, computer accompaniment mobile phone live broadcast, musical instrument input mobile phone live broadcast