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 pumping 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 soir?es 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 banging 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