The Audio Technica ATH-C200BTBK is a pair of in-ear headphones that offer exceptional Bluetooth® wireless sound quality at a great value. These headphones feature an "open" style design with powerful 12 mm drivers and specially designed sound tubes, delivering full-range audio with enhanced low-frequency performance. The open design allows some ambient noise to pass through, ensuring you remain aware of your surroundings while enjoying your music. With silicon housings for a secure and comfortable fit, these headphones also come equipped with an in-line mic and controls, allowing you to easily manage calls, adjust volume, and control music playback on your smartphones and other devices. The internal battery provides up to 9 hours of continuous playback time and can be conveniently recharged using the included USB charging cable.