For us, the speakers that impressed us the most with its battery life were Bose, Ultimate Ears, and Turtlebox. Additionally you want to take into account how the battery holds power about time. Will the hours slowly and gradually dwindle down following a 12 months of use? Two years? https://www.bluetoothspeaker.top/new-arrivals-bluetooth-speakers-outdoor-inalambrico-speaker-mp3-player-speaker/