Wireless Headphones - with microphone, True Wireless earplugs, closed construction, Bluetooth 5.2, supports AAC, aptX, aptX HD and SBC, active noise control (ANC), track shuffle, taking calls, with volume control, IPX4 certification, frequency range: 5 Hz-20000 Hz, sensitivity: 110 dB/mW, impedance: 20 Ohm, converter: 9mm, battery life of up to 50 hr(s) (20 hr(s)+30 hr(s))