The AirPods Pro 3 use an Acoustic Seal Test to check the fit of ear tips, according to a new Apple support document.Apple says that the Acoustic Seal Test will ensure that you're using the proper ear tip size for the best sound quality and noise cancellation.The AirPods Pro 1 and the AirPods Pro 2 have an Ear Tip Fit Test, but Apple updated the process for the AirPods Pro 3.
Apple suggests starting with the medium size ear tip.If you can't achieve a good seal, switch to the larger tip.If the ear tip feels too large, switch to a smaller tip.
Apple designed new foam-infused silicone ear tips for the AirPods Pro 3, which it says are softer and less stiff than the AirPods Pro 2 ear tips.AirPods Pro 3 ear tips come in five sizes, including XXS, XS, S, M, and L.XXS is new for this generation.
For heart rate sensing, the AirPods Pro 3 need skin contact.Apple warns that the best ear tip size for heart rate sensor accuracy could differ from the best size for acoustic seal.The AirPods Pro 3 should be positioned toward your face at a 45-degree angle, with the heart rate sensor resting against the ear.
If heart rate recordings seem inconsistent, Apple recommends trying a different ear tip size.The Acoustic Seal Test can be initiated by connecting the AirPods Pro 3 to an iPhone with iOS 26 or an iPad with iPadOS 26, going to the AirPods Settings, and selecting the Acoustic Seal Test option.The AirPods Pro 3 will launch this Friday.
