Bluetooth stereo headphones for wireless music enjoyment. The retractable ear cups allow you to store the headphones in a space-saving way. Thanks to the integrated microphone, you can easily switch between music playback and call answering. So you'll never miss a call while listening to music. Supports the existing voice assistants Siri and Google Assistant. Cushioned headband for comfortable music enjoyment even over long periods of time. The headphones have an individually adjustable headband that adapts to the shape of your head. Music time: up to 15h with fully charged headphones. Talk time: up to 15h with fully charged headphones. Charging time approx. 3 hours. Volume control directly on the headphones. Audio playback possible via Bluetooth or audio cable. Music control functions (play/pause). Smartphone functions controllable via multifunction button (e.g. accept/reject/end calls/redial). Charging via USB-C: cable for charging included. System requirements:. Bluetooth-enabled end device.