Deep. Loud. And immersive, too. The SoundLink Revolve Bluetooth speaker delivers true 360-degree sound for consistent, uniform coverage. Place it in the center of the room to give everyone the same experience. Or set it near a wall so sound radiates and reflects. This wireless speaker is durable with a seamless aluminum body, water-resistant and easy to grab and go with a rechargeable battery that plays up to 12 hours. Additional features include: voice prompts, speakerphone, Stereo Mode for pairing with full left/right stereo performance or Party Mode to make the music even louder. You can multi-connect to two devices and easily swap who controls the music. The Bose Connect app helps you easily manage Bluetooth connections, unlock features and access future updates. NFC pairing makes for easy connectivity to your NFC-enabled devices. The threaded universal mount attaches to almost any tripod. Charges easily via Micro-b USB port. Auxiliary input allows you to connect to other audio sources. 3 1/4"W x 3 1/4"D x 6"H.