There are three primary AirPods 4 features that are worth pointing out. First, active noise cancellation (ANC) technology is provided on this model and does not require a rubber seal such as the case on previous models. Second, they utilize the H2 chip which improves sound quality, noise cancellation technologies and brings unique Apple capabilities. Third, because the users get a new shape of the device, the comfort and the fit of the current shapes are significantly different from the previous versions, making them more comfortable and close to the fit of AirPods 1 and 2 but with better sound features.