Ultimate Ears WONDERBOOM 4 Outdoor Speakers Bluetooth Waterproof with Big Bass & 360-Degree Sound, Dustproof Floating Wireless Speaker, 131ft Range – Blue

14 Hours of Boom: This waterproof portable speaker bluetooth booms on with up to 14 hours of playtime, ensuring you soak up every moment with your bluetooth speakers
Double Up for Stereo: Pair two WONDERBOOM 4 portable Bluetooth speakers for bigger sound; press once to double up; press again for true stereo, with left and right channels
Surprisingly Bigger 360-Degree Sound: The WONDERBOOM 4 portable waterproof Bluetooth speaker features bigger 360-degree sound in a small Bluetooth speaker package; boosted sound for up to 14 hours of playtime.