If you buy a Bluetooth speaker in 2017, you want it to be a little more useful than just being a squat black box that creates mediocre sound. The new Bose Revolve and Revolve Plus follow the tried-and-tested UE Boom formula: a waterproof, 360-degree Bluetooth speaker with great sound quality and portability, but also with the addition of built-in support for Siri or Google Assistant.