The Avantree HT4189 Wireless Headphones offer a sleek and convenient listening experience with a play time of up to 40 hours. These Bluetooth headphones come in a stylish black color and feature an adjustable headband for added comfort. With wireless connectivity and a built-in Bluetooth transmitter, these headphones allow for easy pairing with your TV or other devices for a seamless audio experience. Perfect for on-the-go use or at home, the Avantree HT4189 headphones provide high-quality sound and freedom of movement.