The Klipsch Reference Over-Ear Bluetooth headphones utilize Klipsch's Balanced Dynamic (KBD) driver technology to decrease distortion and deliver the most authentic bass ever heard in an over-ear headphone. With Bluetooth high definition streaming audio and a cVcmicrophone, these premium headphones deliver a comfortable, easy-to-use listening experience without the high price tag. Features: - Unique 40mm Klipsch Balanced Dynamic Drivers - Up to 20 hours of battery life - Integrated mic with cVc - aptX and AAC high-definition Bluetooth streaming - Removable Ear Cushions - Removable Flat Tangle-Resistant Passthrough Cable - Foldable Design