Ergonomic surface design for a better fit

Since introducing the world’s first in-ear headphones in 1982 (MDR-E252), we’ve surveyed huge amounts of data relating to ear shapes from around the world. The WF-1000XM4 headphones are the product of that research, combining a shape that matches the ear cavity with a new ergonomic surface design for a more stable fit.
FPO

Use the app to find your perfect size

Find the right fit for your ears with the Sony | Headphones Connect app. It takes you through a few simple measurements to find the ideal size of Noise Isolation Earbud Tips0 to ensure maximum sound quality and minimum outside noise.
Image showing Sony | Headphones Connect app user interface