Providing portable audio that can fill a room, the Bose SoundLink Revolve II Bluetooth Speaker sports a downward-firing full-range transducer and omnidirectional acoustic deflector. This means that the SoundLink Revolve II can deliver 360° of audio throughout a room, whether it's placed dead center or against a wall, reflecting audio to you and your guests. The addition of dual passive radiators supports deep bass and reduces vibration. On a full charge, you get up to 13 hours of streaming audio from a Bluetooth-compatible device.