AirPods Pro is a wireless earphone launched by Apple on October 28, 2019, which supports active noise cancellation function. Adopting an in ear appearance design, each one has a height of 30.9 millimeters, a width of 21.8 millimeters, a depth of 24.0 millimeters, a weight of 5.4 grams, and a white color scheme. The noise reduction function will work continuously at a frequency of 200 times per second to achieve real-time noise reduction. After activating the transparency mode, the ventilation system will continue to maintain pressure in the ear, but its outward facing microphone will begin to capture surrounding environmental sounds and transmit them to the ear with ultra-low delay.