Soundlink Revolve Portable Wireless Bluetooth Speaker Black. Engineered to deliver deep, loud sound despite its small footprint, the SoundLink Revolve is Bose's top-of-the-line Bluetooth speaker. With its tapered, cylindrical shape, this unique speaker radiates rich sound evenly around a room for an immersive 360° listening experience. Topped with a flexible handle for easy transport, the SoundLink Revolve is easy to grab and go for music on the move. No matter where you take it, this petite powerhouse is built tough to withstand the elements. Suddenly decide to have an impromptu dance in a rain shower? The SoundLink Revolve keeps the party going with its water-resistant, seamless aluminum body. Thanks to its built-in rechargeable battery, the SoundLink Revolve can keep partying for up to 12 hours on a single charge. Instead of worrying about this speaker keeping up with you, it's more likely you'll find yourself taking a break to keep up with the Revolve. Voice prompts talk you through Bluetooth pairing, and there's a built-in speakerphone for calls. Use the Bose Connect app to pair two SoundLink speakers for stereo or party mode. The app also helps you manage your devices, unlock features and access future updates.