Bluetooth speaker.Splash-proof design with sealed controls and rubberized exterior.Hands-free.Jump-start Technology Set the mood at your next barbeque, pool party or picnic with MobiOut, a splash-proof and rugged yet elegant Bluetooth speaker that combines high-fidelity sound with wireless portability. MobiOut is sturdily constructed to withstand knocks and bumps from your rowdy guests, and contains a passive radiator that provides deep, resonant bass. Control your music and calls with top-mounted volume and playback buttons that are sealed to keep water out. It also contains a hands-free speakerphone with a built-in microphone so you can even take calls. What's especially unique about MobiOut is that it features Jump-start Technology, which means that you can use it as an external power source to charge your phone. It can be frustrating when your speakers are charged but your phone isn't, so we added this additional feature to improve MobiOut's functionality.