Overview:Rugged Portable Bluetooth Speaker – Bluetooth Wireless Technology IPX5 Waterproof: BRV-XXL /2 is IPX5 waterproof so you can spray it down when it gets dirty. Up to 18-Hour Playtime: Enjoy hours of listening time. Booming Sound: Our loudest waterproof Bluetooth speaker has massive subwoofer framed by two passive radiators for deep rumbling bass balanced by four full range drivers for 360 degree sound. EQ Settings: Manually adjust the sound to your liking.|Features:- EQ settings let you adjust the sound just the way you want it. – Pair 100 BRV-XXL /2 speakers together using broadcast technology for a powerful immersive experience. – 30 Metres / 100 Foot Enhanced Bluetooth Range|