Automatic Artificial Intelligence Noise Canceling function Dual Noise Sensor technology Ambient Sound mode for control of your listening experience Built-in lithium-ion battery - offers up to 35 hours of playback 1.2-inch (30mm) drivers achieve a pure, clear sound Sleek, rounded design with adjustable metal slider Soft, oval-shaped earpads with swivel flat earcups NFC and Bluetooth connectivity Simple button press connects to smartphone's voice assistant