The best small Bluetooth speaker we've tested is the Ultimate Ears WONDERBOOM 2.
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However, if you're looking for a portable speaker to use at home or outdoors, this versatile speaker is still a solid choice. That said, while it's portable, it isn't as small as the Sonos Roam, which is easier to fit in a backpack. When connected to Wi-Fi, it offers fantastic voice assistant support with Alexa and Google Assistant built-in and can easily understand you in noisy settings and when you're far away from the speaker. Its room correction feature is currently only available with iOS devices. With its room correction feature turned on, it has a fairly well-balanced sound profile suitable for listening to a wide variety of audio content, and there are bass and treble adjustments in its companion app that you can use to tweak its sound to your liking. It also comes with an IP56 rating for dust and water resistance, certifying it to withstand direct contact with water for up to three minutes and dust for around two to eight hours, so you can take it outside without worrying about it getting wet or dirty. Its long-lasting battery life of over 10 hours makes it great for long listening sessions, though this varies depending on your usage habits. This versatile battery-powered Bluetooth speaker comes with a built-in handle you can use to carry it from room to room. The Sonos Move is the best portable Bluetooth speaker we've tested.