Wireless Headphones - with microphone, True Wireless earplugs, closed construction, Bluetooth 5.2, active noise control (ANC), voice Assistant, track shuffle, taking calls, IPx5 certification, frequency range: 20 Hz-20000 Hz, sensitivity: 105 dB/mW, impedance: 16 Ohm, converter: 11mm, battery life of up to 40 hr(s) (10 hr(s)+30 hr(s))