Ruggedness and waterproof design: We give precedence to speakers that are built to outlive the knocks and bumps of travel. We choose speakers with an Ingress Security (IP) score, which tells you accurately how dustproof and waterproof a speaker is. Traveling with a speaker is usually an inconvenience, but https://www.bluetoothspeaker.top/bluetooth-speaker-wireless-high-quality-subwoofer-home-outdoor-bluetooth-speaker/