Music anywhere, anytime. The SRS-X77 is perfect your home and on the go. Combining Multi-room playback with your favourite music streaming services and portability thanks to a built in rechargeable battery. Music anywhere anytime with wireless multi-room playback powered by songpal link. The best of online music with built-in music streaming from spotify connect and google cast for audio music services. Take your music anywhere - a compact, wire-free design with integrated rechargeable battery. 1 speaker. Compatible with iPod, iPhone and iPad. Bluetooth compatible. 40 watts per speaker. 2 amplifier channels. Frequency 20Hz-20000Hz. General information Size H13.2, W30, D6cm. Model number srsx77b. Ce7. Mains operated. Power from USB. Batteries required 1 x rechargeable batteries (included) . Battery life 10 hours.