BIGBEN PARTY all-in-one karaoke microphone in black, the ideal accessory for family or friends' karaoke parties. High-performance 15W speaker for rich, powerful sound. Advanced Mix function allowing precise control of the volume and Echo effect to tailor the acoustics to your preference. 4 built-in voice effects for varied and fun vocal performances. Bluetooth for streaming or singing along to your playlist. 1800 mAh rechargeable battery guaranteeing 6 hours of continuous use. Dynamic light effects to accompany your performances. USB and SD card reader for great musical flexibility. 3.5 mm headphone jack and protective case included.