The Sonos Roam has been sitting down at the top of our best Bluetooth speakers list for many time now and we adore that it seamlessly will become part of your Sonos Wi-Fi multi-area setup indoors, far too. The Wonderboom four is probably the smallest speakers on our list https://www.bluetoothspeaker.top/latest-bt5-0-wire-music-box-altavoz-profesional-wireless-bt-super-bass-speakers/