Review on 🎤 Experience the Ultimate Karaoke: AsperX Upgraded 5-in-1 Wireless Bluetooth Microphone with DSP Noise Reduction, 40W Stereo Speakers, and Voice Changer - Perfect for Singing, Recording, and Party Fun! by Luis Green

Bought this portable karaoke machine for camping, amazing up to 7 hours after full charge at 70% volume as a music speaker! It has a bass speaker facing you and the other three high speakers around you. Holding them to sing can create the best acoustic field in your living room. I think he will sing for at least 4 more hours.