Ruggedness and waterproof design: We give priority to speakers that are built to outlive the knocks and bumps of travel. We favor speakers with an Ingress Defense (IP) score, which informs you accurately how dustproof and waterproof a speaker is. Howdy, That is Michael Montoya. I’m the owner of https://www.bluetoothspeaker.top/custom-music-bluetooth-speakers-outdoor-subwoofer-bass-wireless-bt-speaker/