Pump up the jam with the Ultimate Ears MEGABOOM Bluetooth Wireless Speaker in charcoal black. This cylindrical speaker sends audio in all directions thanks to a pair of 2 drivers and two 2 x 4 passive radiators. It connects to up to two devices simultaneously via Bluetooth and can remember up to eight. Two MEGABOOMs can be used at once with a single device. The MEGABOOM can be submerged in 3.3 ' of water for up to 30 minutes and can be rinsed off if it gets dirty. The lithium-ion battery lasts up to 20 hours and can be recharged in approximately 2.5 hours.

A free app lets you use alarm features, turn the speaker on and off, and control the volume. Alternatively, tap the top of the MEGABOOM once to play/pause and twice to skip tracks.