Wireless Headphones - with microphone, True Wireless earplugs, closed construction, Bluetooth 5.2, active noise control (ANC), voice Assistant, track shuffle, taking calls, frequency range: 20 Hz-20000 Hz, sensitivity: 99 dB/mW, impedance: 16 Ohm, converter: 6,8mm, battery life of up to 24 hr(s) (8 hr(s)+16 hr(s))