展开Now you can listen to music and calls while keeping your ears warm and not having to worry about dealing with a cord. Cords can be a pain, getting tangled up while storing and getting knocked about while wearing. These Bluetooth headphone earmuffs are wireless and has HD speakers and a microphone for taking calls. This already great design is enhanced by the warmth that these wrap around ear warmers create. The padded band is adjustable for one size fits most. They easily collapse for carrying and storage. The behind the head design allows you to wear hats and glasses as well. These earphones come with easy to follow instructions and a charging cord. Made of 100% Polyester Wrap Around Earmuffs with Built in Bluetooth Headphones and mic Wireless headphones connect to your phone, tablet, or car HD speakers and mic. Answer and take calls Adjustable and collapsible. Includes charging cord and easy to follow directions