Enjoy powerful sound with EXTRA BASS A passive radiator works together with a full-range speaker to enhance low-end tones, giving bass a boost. Goes wherever you go The durable exterior and strap make this speaker ready for just about anything. Hang it from your backpack, from your wrist, or even from a parasol when you’re out in the sun, and the downwards-facing speaker will project the sound down to where you are. Small speaker, big sound Don't be fooled by its compact shape, this little speaker packs major surround sound. The Sound Diffusion Processor expands sound in any space, with its DSP technology. Epic party stamina Get up to 16 hours of battery life to keep the party going. A new battery indicator, right on your smartphone, lets you know when it's time for a recharge. Keep your hands free Need to make a call? No problem. Whether you’re at home or out and about, the built-in mic lets you enjoy hands-free calling straight through your speaker.