MORE SOUND ALL AROUND: Engineered to deliver true 360 sound for consistent, uniform coverage from a bluetooth speaker. SoundLink Revolve-plus II plays louder and deeper with longer battery life than SoundLink Revolve II IMPROVED BATTERY LIFE: With up to 17 hours from a rechargeable lithium-ion battery, you get more play time than the original SoundLink Revolve-plus speaker. Charging is easy via the Micro-B USB port DURABLE PORTABLE SPEAKER: SoundLink Revolve-plus II is dust and water resistant (IP55 rating), so it will stand up to splashes by the pool. Plus, it’s easy to grab and go, with a flexible fabric handle BUILT-IN MICROPHONE: Take calls and access your device’s default voice assistant right from the portable speaker. Or connect the speaker to an Amazon Alexa-enabled device, like the Echo Dot, for even more hands-free control of your music CONNECTING IS EASY: Voice prompts talk you through pairing your device to this Bluetooth speaker. Multi-connect lets you pair two devices at one time and easily switch between them for complete control of the music BOSE SIMPLESYNC TECHNOLOGY: SimpleSync pairs your SoundLink Revolve+ Series II to compatible Bose products for sound that follows you. Press and hold the Bluetooth button on each device to sync their sound. Link more devices by pressing the Action button.