Ruggedness and waterproof design: We give priority to speakers that are built to survive the knocks and bumps of travel. We like speakers with an Ingress Defense (IP) rating, which informs you specifically how dustproof and waterproof a speaker is. If you don’t get the email with your coupon https://www.bluetoothspeaker.top/factory-new-product-rechargeable-outdoor-karaoke-bluetooth-speaker-with-wireless-microphones/