Enjoy powerful sound with EXTRA BASS and Sound Diffusion Processor 16 Hours of Battery Life: Listen longer with a battery that lasts up to 16 hours, and a convenient battery status indicator IP67 Waterproof and Dustproof Rating: It features waterproof and dustproof with an IP67 rating and new UV coating for extra durability in the elements Compact Speaker with Versatile Strap: With a specially engineered strap, the super-portable XB100 is easy to travel with. But don’t be fooled by the small size—this compact speaker packs plenty of power Sound Diffusion Processor: The Sound Diffusion Processor, spreads sound in any space, for richer, more expansive audio Built-in microphone lets you enjoy hands-free calling straight through your speaker. And you can count on better, clearer calls with Echo Cancelling, which allows two people to talk at the same time without cutting off either of them. Connect two XB100 speakers wirelessly for stereo sound that will spread even further. 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 tree when you’re out in the sun, and the downwards-facing speaker will project the sound down to where you are.