It lacks very low bass compared for the larger EPICBOOM, much too. You can check out the Anker Soundcore Movement Boom Plus If you need a similarly priced waterproof speaker with a little additional minimal bass. Nevertheless, the Anker is not quite as small as being the Ultimate Ears, https://www.bluetoothspeaker.top/oem-logo-smart-lamp-bluetooth-speaker-and-led-display/