These headphones feature high-definition stereo sound and advanced Bluetooth 5.0 technology for superior sound quality with high fidelity. You'll be able to lose yourself in your music even at low volume levels. The 40mm drivers with deep bass function deliver playback with superb bass depth and HD clarity. You'll feel the music in your chest with these headphones. Enjoy up to 5 hours of continuous music playback on a single charge. The headphones can be quickly recharged with the included USB cable. The earmuffs are made of soft, memory foam for maximum comfort. They're also foldable for easy portability.