For us, the speakers that amazed us the most with its battery life had been Bose, Ultimate Ears, and Turtlebox. You also want to think about how the battery holds power about time. Will the hrs little by little dwindle down after a 12 months of use? Two years? https://www.bluetoothspeaker.top/kids-karaoke-machine-with-2-microphones-bluetooth-speaker-player-system-karaoke-mics/