It is actually calculated on the IP scale, which has numbers that seek advice from the defense your unit has from solids and liquids. The 1st digit soon after IP signifies strong security while the second a person pertains on the liquids. Pyle Portable Bluetooth PA Speaker System is https://www.bluetoothspeaker.top/original-portable-hifi-wireless-speaker-outdoor-loud-speaker-music-surround-bass-box/