Details: Featuring advanced Bluetooth 4.0 technology, a luxurious design, and premium sound, the Satechi Aluminum Wireless Headphones allow you to listen to your music effortlessly and in style. Connect via Bluetooth, Or Don’t. Aux Cord Included: The Aluminum Wireless Headphones use Bluetooth to effortlessly connect with your smartphone, tablet, laptop, or Bluetooth-enabled device. They also stream crystal-clear audio for a range of up to 33 feet for 18 hours on a single charge. When connected to your smartphone, the headphone’s built-in microphone allows you to make and receive hands-free calls. Included with the Aluminum Wireless Headphones is an auxiliary cord for situations when you cannot connect to Bluetooth, like on an airplane. Simply plug in your headphones using the cord and continuing listening to your music. Crystal Clear Sound: The Aluminum Wireless Headphones boast premium stereo drivers letting you enjoy thumping bass, prominent mids, and sparkling highs. Beautiful Design: The aluminum Wireless Headphones have a sleek, sophisticated, and timeless design making them the perfect complement to any Apple computer or accessory. Offered in Space Grey, Silver, and Gold.