Boost the power of your Amazon Echo Dot. A sleek portable speaker with built in re-chargeable battery, giving up to 6 hours music playback from a single charge. Simply place your Amazon Echo Dot Second Generation into the top, plug in the USB and audio connectors and you’re good to go. You can use Alexa as normal, as well as taking control of the speaker volume & track selection. With a premium 10W amplifier, stereo speakers and a passive subwoofer, you’ll get great sound wherever you are.