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 Protection (IP) rating, which tells you precisely how dustproof and waterproof a speaker is. Carry Documentation: Carry the documentation for your Bluetooth speaker, https://www.bluetoothspeaker.top/best-selling-products-high-end-professional-outdoor-travel-speaker-wireless-stage-speaker/