Wireless Headphones - with microphone, True Wireless earplugs, closed construction, Bluetooth 5.2, supports AAC, LDAC and SBC, active noise control (ANC), Hi-Res audio, track shuffle, taking calls, with volume control, IPX4 certification, frequency range: 14 Hz-48000 Hz, converter: 11mm, battery life of up to 36,5 hr(s) (6,5 hr(s)+30 hr(s))