BIG LOUD PRISTINE SOUND + EXTREME BASS: Ultimate Ears HYPERBOOM is a portable Bluetooth speaker with supermassive, beautifully rich sound with big booming bass.EASY MUSIC SHARING: Play music from four different devices and easily switch between them with just a press of a button. Connect via two Bluetooth inputs, one auxiliary, and one optical input.ALL DAY 24 HOUR BATTERY LIFE: HYPERBOOM sports an up to 24-hour rechargeable battery that keeps the party pumpin’ wherever you take it. Or plug it in to rage for the rest of time.ADAPTIVE EQUALIZER: This party speaker does all the heavy lifting to rock a pitch-perfect sound anywhere. Its brainy adaptive EQ literally reads the environment—and automatically customizes the sound to whatever space it’s in.SPILL AND SPLASH PROOF: What’s more? HYPERBOOM is built to handle the sloshiest of soirées. Got a spill or splash — the IPX4 rating has got your back! Simply wipe it off, and you’re good to go.PARTY UP: Connect HYPERBOOM with any BOOM, MEGABOOM, or even another HYPERBOOM to kick-start a party of truly ultimate proportions. Adding just two to four can reach noise-violation levels of fun.USB CHARGE OUT: HYPERBOOM is the party powerhouse that even gives your phone a boost. Flip open the weather door, plug into the USB charge-out, and keep bangin’ while your phone’s powering up.ONE TOUCH MUSIC CONTROL: HYPERBOOM lets you play, pause, and skip tracks directly on the speaker. You can also set up one-touch to your playlist** via the app.