Bluetooth connectivity lets you pair with two Bluetooth-enabled devices simultaneously for seamless playlist sharing Compact size and aluminum handle make it easy to carry from room to room Built-in dual microphone enables crystal-clear, hands-free voice calling Built-in battery delivers up to eight hours of battery life for all-day listening Superior acoustic engineering ensures rich, room-filling sound production Self-tuning system lets it automatically calibrate for better listening in any environment Pair two Onyx Studio 8 speakers for a wider soundstage Made with recycled material and eco-friendly packaging