Bluetooth connectivity lets you stream wirelessly from compatible devices for seamless playlist sharing Compact size and aluminum handle make it easy to carry from room to room Built-in dual far-field microphones enable crystal-clear, hands-free voice calling Built-in battery delivers up to eight hours of battery life for all-day listening Three-way speakers ensure rich, room-filling sound production Auto self-tuning system lets it automatically calibrate for better listening in any environment Pair up to three Go Play 3 speakers for a wider soundstage Made in part with 100% recycled polyester yarn, 90% recycled aluminum, and 85% recycled plastic