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. The cushioned headband ensures 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 15 hours with fully charged headphones. Talk time: up to 15 hours with fully charged headphones. Charging time is approximately 3 hours. Volume control is directly on the headphones. Audio playback is possible via Bluetooth or audio cable. Music control functions include play and pause. Smartphone functions are controllable via a multifunction button (e.g., accept, reject, end calls, redial). Charging is via USB-C, and a cable for charging is included. System requirements: Bluetooth-enabled device.