Microphone with Built-in Bluetooth Speaker Lighting effects sync with music and singing Works with all music and karaoke apps Rechargeable battery for hours of fun 6 fun voice changing effects including: echo, female, male, chipmunk, robot and radio! 1-touch lead vocal removal for a true karaoke experience Crisp, clear loud built-in speaker Adjustable microphone volume control SMM548 Party Machine Mic Micro-USB charging cable This rockin' mic is built for funand good times anywhere!It features big time,blasting audio and dazzlingmusic-syncing lights. Just pair your Bluetooth device to getthe party started. The 6 built-invoice changers will take your performances to the next level. If you're feeling brave, remove the leadvocals from any song with the touch of a button. Does Party Machine refer to the microphone or theperson using it? That's up to you to decide Features: Included: