Sonos ROAMSLBK

""Enjoy the unmatched Sonos experience on WiFi, and stream audio directly from your smartphone, tablet, or computer using Bluetooth. The speaker automatically connects to your WiFi network at home and pairs with your device when you're away. So the only thing you have to think about is what to play. The built in rechargeable battery powers up to 10 hours of continuous playback at moderate volumes. Estimate for 50% volume while streaming over WiFi. Place Roam SL upright to save surface space, or lay it horizontally for added stability. The sound adapts to the speaker's orientation for the best listening experience. ""