Bluetooth stereo headphones for wireless music enjoyment. With the retractable ear cups, the headphones can be stored space-saving. Thanks to the integrated microphone, you can easily switch between music playback and call answering. This means you'll never miss a call again while listening to music. Supports the existing voice assistants Siri and Google Assistant. Superior fit reduces unwanted outside noise so you can enjoy your music without interference. Cushioned headband for comfortable music enjoyment even for long periods of time. The headphones feature a customizable headband that adjusts to your head shape. Music time: up to 8 hours with fully charged headphones. Talk time: up to 8 hours with fully charged headphones. Charging time approximately 3 hours. Volume control directly on the headphones. Audio playback possible via Bluetooth or audio cable. Music control functions include play and pause. Smartphone functions are controllable via a multifunction button, such as accepting, rejecting, ending calls, and redialing. System requirements: Bluetooth-enabled device.