Additional FeaturesCompact yet powerful, the SRS-XB12 portable wireless speaker features EXTRA BASS for deep, punchy sound and a battery life of up to 16 hours2. It's also waterproof and dustproof3 for your peace of mind. Get things going with EXTRA BASS4. A passive radiator works with the monaural speaker to enhance low-end tones, giving bass a boost — despite the compact size. Wherever you go, EXTRA BASS can go with you, thanks to the compact and easy-to-carry SRS-XB12. Enjoy enhanced low-end tones from a speaker that's easy to carry from place to place. Totally waterproof, Totally dustproof, Long battery life.