Wireless Headphones - with microphone, True Wireless pits, Bluetooth 5.0, USB-C, for PC, supports AAC, aptX and SBC, voice Assistant, track shuffle, taking calls, with volume control, frequency range: 20 Hz-20000 Hz, impedance: 200 Ohm, converter: 12mm, battery life of up to 9 hr(s) (4 hr(s)+5 hr(s))