Apple's AirPods Pro 2 now have a “hearing aid feature”: a hearing test and the ability to amplify sound for mild or moderate hearing loss, with a free software update.

For now, the hearing aid feature is only available with the AirPods Pro 2 model. Users will need an iPhone or iPad to set it up. The feature setup starts with built-in hearing loss tests to determine whether or not users have hearing loss. If they do, they can then set up their own customized amplification levels.

Some Apple AirPods wireless headphones can be used as hearing aids with a new software update available Monday. It’s a high-profile move that experts applaud, even if they only reach a small portion of the millions of Americans with hearing loss.