So what's a good number range to search for? We propose nearly anything between a four and six, but 7 and higher would be a premium score and capable of withstanding whole h2o submersion. The second number may be read on a scale of how waterproof the speakers are. https://www.bluetoothspeaker.top/factory-price-fm-am-multi-band-radio-with-bluetooth-speaker-and-aux-in/