Wireless Concert One is our Bluetooth on-ear headphones. These premium headphones offer you wireless freedom paired with an immersive listening experience. Enjoy up to 21 hours of rich signature sound. The built-in microphone ensures your voice is as clear as the sound of every note. Wireless music playback Compatible with all Bluetooth-enabled devices 21 hours of non-stop music enjoyment Incl. Travel Case, aux cable, & 2x Cable Twisters 90° rotatable ear pads