Ultimate Ears MEGABOOM Plum Wireless Mobile Bluetooth Speaker Waterproof and Shockproof (2015) Freakishly amazing 360-degree sound with deep bass.For Audio Playback: Smartphones, tablets and other devices that support Bluetooth and Bluetooth Smart wireless audio profile [Advanced Audio Distribution Profile (A2DP)] or 3.5 mm audio output Waterproof (IPX7) grab n go shape that is shockingly light1.93 pounds PartyUp from Ultimate Ears allows you to wirelessly connect more than 50 UE speakers 100 ft Bluetooth wireless range, 20-hour rechargeable battery* and ultra-fast micro USB charging (* Actual wireless range and battery life will vary with use, settings and environmental conditions) UE MEGABOOM app for additional features and control