Soundtec By Porodo Karaoke Microphone With Built- In Speaker -Digital Noise Reduction Technology -4H Working Time At 80% Volume -≤10m Transmitting Distance -Sing Along, Remove Vocals -6 Modes Of Sound Effects -Condenser Microphone -2H Charging Time -1800mAh Battery -High-Clarity Mic -Bluetooth 5.0 -Smart Design