Play it loud with an EXTRA BASS sound. Waterproof, rustproof, dustproof, and shockproof IP67 design for worry-free usage. Power through any playlist with up to 12 hours of battery life. Compact, lightweight, highly portable design. Get things booming with Party Connect and sync up to 100 speakers. X-Balanced Speaker Unit enhances sound quality and power. The speakerphone function offers a convenient way to talk hands-free, whether it’s a conference call for work or a chat with friends.