Deep. Loud. And immersive, too. The SoundLink Revolve II Bluetooth® speaker delivers true 360° sound for consistent, uniform coverage. Place it in the centre of the room to give everyone the same experience. Or place it near a wall so sound radiates and reverberates. This wireless speaker is durable, water- and dust-resistant, and easy to grab and go—with a rechargeable battery that plays for up to 13 hours.