Wireless Headphones - with microphone, True Wireless earplugs, closed construction, Bluetooth 5.2, supports SBC, voice Assistant, track shuffle, taking calls, IPx5 certification, frequency range: 20 Hz-20000 Hz, sensitivity: 101,5 dB/mW, impedance: 16 Ohm, converter: 10mm, battery life of up to 26 hr(s) (6 hr(s)+20 hr(s))