iKF Fly Pro Active Noise Cancelling Wireless Earbuds Bluetooth In Ear Earphones Built-in MiciKF Smart Noise Cancellation Algorithm: Equipped with iKF noise cancellation algorithm, achieving a breakthrough noise reduction depth of 42dB. With three adjustable noise reduction modes within the app, it caters to all environments requiring noise reduction. Dual Ear Four Mic ENC for Crystal Clear Calls: Utilizing dual ear four microphone ENC, it effectively reduces surrounding noise during calls, captures voices sharply, and eliminates echo