Capable of handling Bluetooth or Wifi audio and IP67-rated for dust and water resistance, Sonos' Roam is meant to be a use-anywhere speaker. It stands under 7" tall and weighs under a pound, and packs in two Class-H amplifiers for running the tweeter and oval-shaped mid-woofer. It has automatic Trueplay, which adjusts the sound to the environment using the built-in mics that serve double-duty for hands-free Alexa and Google Assistant support. Two Roams can pair together in stereo over Wifi, and a single unit can also beam Bluetooth streams to other Sonos speakers. The battery lasts provides up to 10 hours of playback or 10 days of standby and charges via USB-C, or via any Qi-compatible wireless charger.