Over-ear headphones are equipped with soft, faux-leather ear cushions for long-wearing comfort 40mm drivers deliver rich sound quality so you can immerse yourself in the music Bluetooth 5.0 with AAC and aptX HD provides a reliable wireless experience and comes with an optional 3.5mm cable for Hi-Res certified performance Built-in mic gives you hands-free convenience so you can take phone calls on the go Lithium polymer battery gives you an impressive four continuous days of playback time, and provides 13 hours of playback time on a quick 10-minute charge Folding design makes it easy to take the headphones with you during travel and commutes