Cut The Cord And Set Your Music Free With Audiology Carbon Bluetooth Headphone On-Ear Wireless Headphones. The sound is powerful and clear, you can switch easily between music and calls with intuitive controls, and play for hours with a long-lasting rechargeable battery. They're 40% lighter than comparable headphones for a comfortable fit. It's easier than ever for you to unplug and unwind. Enjoy detailed and balanced sound that raises the bar for Bluetooth headphones. With up to 5 hours of play time, you can listen to your favorite music, watch a movie, check out videos and still have plenty of power left.