Ultimate Ears MEGABOOM 3

Portable wireless Bluetooth speaker
Super-powerful and immersive 360 sound
Deep Bass, Waterproof, Dropproof, Dustproof
Stunning high-performance fabric
Maximum Sound Level: 90dBA
Frequency Range: 60Hz - 20kHz
Drivers: Two 50mm
Pair up to 8 Bluetooth enabled source devices
Connect up to two source devices at the same time