UE BOOM 2 Phantom Wireless Mobile Bluetooth Speaker – Link
Amazon has currently got this on sale for the lowest it has ever been at only $106.99 w/ free shipping.
Insanely good, loud 360 degree sound with deep bass
Portable design so you can bring the music anywhere
Waterproof*, shockproof, designed for adventure (* IPX-7 rated waterproof up to 30 minutes and a depth of one meter)
Connect with Echo Dot (2nd Generation) for hands-free voice control of UE BOOM 2 with Alexa; ask Alexa to play music from Amazon Music, Spotify, Pandora, iHeartRadio and TuneIn on your UE BOOM 2
PartyUp from Ultimate Ears allows you to wirelessly connect more than 50 UE speakers
15-hour battery life and 100 ft. Bluetooth wireless range (Actual battery life will vary with use, settings and environmental conditions. Rechargeable batteries have a limited number of charge cycles)