Audio Technica ATH-CKR300BT wireless in-ear headphones offer a natural and true sound. They are easy to use and lightweight. These headphones have a long battery life, multi-device compatibility, and an in-line microphone, making them an excellent choice for day-to-day use, in the office, gym, or while on the go. High-performance 9.8 mm drivers deliver rich, wide-range sound reproduction. The battery provides 8 hours of playback time on a single 2-hour charge. A USB type C cable provides a quick charge. To help prolong battery life, the headphones turn off when left unconnected for five minutes.