Wireless Headphones - with microphone, True Wireless earplugs, closed construction, Bluetooth 5.1, supports AAC and SBC, voice Assistant, power bank, track shuffle, taking calls, with volume control, IPX4 certification, frequency range: 20 Hz-20000 Hz, sensitivity: 110 dB/mW, impedance: 16 Ohm, converter: 8mm, battery life of up to 35 hr(s) (9,5 hr(s)+25,5 hr(s))