The Ultimate Ears BOOM 4 is a portable Bluetooth speaker designed to deliver incredible 360° surround sound at low, medium and high volumes. A mini speaker that produces huge sound.

Naturally protected from the elements. The BOOM 3 speaker is infinitely portable and truly durable. It also resists water, wear and drops. It comes with a wireless charger that charges overnight to keep you going all day.

The speaker is controlled using the push buttons on the speaker, so it allows a simpler way of handling than having to control the speaker from a mobile phone. With the simply designed vertical push buttons, you can set playback and other functions in addition to the volume controls.

BOOM 4 delivers lifelike sound with realistic bass. With a redesigned transformer and sound radiation, Ultimate Ears delivers power, depth and sharpness to your music.

Ultimate Ears BOOM 4 can be connected to multiple speakers of the same brand to create music listening in a larger space. This function can be useful at party time, where the music needs to cover a larger space.