BIGBEN PARTY all-in-one pink karaoke microphone, perfect for singing alone or in a group. Built-in 15W speaker for powerful, instant sound. Mix function with volume control and Echo effect to personalize your vocal experience. 4 different voice effects to transform your sound. Bluetooth connectivity to stream music or play from your personal playlist. 1800 mAh rechargeable battery offering up to 6 hours of battery life. Built-in light effects creating a festive atmosphere. USB and SD inputs to play your files. Headphone jack for discreet practice. Convenient carrying case included.