Deep, loud, immersive sound. Gives you astonishingly loud performance from a small speaker. True 360° sound. Delivers consistent, uniform coverage. Seamless aluminum body. Provides durability and water resistance (IPX4). Speakerphone. Built-in microphone for taking calls and accessing your phone’s Siri or your Google Assistant™ from the speaker. Rechargeable lithium-ion battery. Lets you enjoy up to 12 hours of play time.