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Phonak CROS Lumity hearing aid
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Phonak CROS Lumity

  • Unaidable hearing loss in one ear
  • Fully rechargeable
  • Advanced features

Imagine a world where you can enjoy conversations no matter where they come from. CROS Lumity does just that. Immerse yourself in the words and live in every moment with a hearing solution designed for those with unaidable hearing loss in one ear.

  •  Improved speech understanding and environmental awareness
  • Personalization with the myPhonak app

  • The Phonak CROS system features universal connectivity with devices such as smartphones, TVs, tablets and laptops  

CROS Lumity
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Open up the world

Our CROS solution takes advantage of our innovative Lumity technology to help you experience the world around you. The CROS system increases environmental awareness from the unaidable ear, automatically detecting sounds coming from both sides.

No matter where sound comes from

Phonak SmartSpeech™ Technology is a collection of features that AutoSense OS™ 5.0 seamlessly adapts, each feature proven to provide either improved speech understanding or reduced listening effort in many listening environments.1,2 

A Lumity hearing solution for unaidable hearing loss in one ear

A CROS device always needs to be combined with a compatible hearing aid in order to provide a hearing solution. What is obtained is a CROS system that consists of two parts:

  • the CROS device, worn on the unaidable ear, picks up sounds and voices and transmits them wirelessly to the hearing aid and
  • the compatible Phonak rechargeable hearing aid receives the signal from the unaidable ear and play it to your better ear.

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Unaidable hearing loss in one ear

CROS L is a solution for you if you have unaidable hearing in one ear and normal hearing or an aidable hearing loss in your better hearing ear. It will transmit the the sounds and voices from the ear you cannot hear in to the ear you can so your hearing ear can pick up sounds from both sides.

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Color options

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Well-Hearing is Well-Being

At Phonak, we believe in changing lives and creating a world where “life is on” for everyone. It’s a world where everyone is free to engage fully with everything that life has to offer and enjoy a greater state of well-being. ​

Because taking steps towards hearing well is linked to noticeable improvements in physical, cognitive, and social-emotional dimensions of well-being. ​

We are committed to not only offering comprehensive hearing solutions but equally important, to raising awareness, encouraging action and changing the conversation around hearing healthcare. Because hearing well is vital to living well.

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Girl using myPhonak Jr. app while playing a basketball game

Connects to smartphones and other devices

Lumity hearing aids features universal Bluetooth® connectivity with a wide range of devices, including smartphones, tablets, laptops and more. Thanks to Tap Control you can connect with the world around you with ease. Enjoy effortless hands-free phone conversations.*

* When paired with an Audéo L-R, L-RT, Naída L-PR or Sky L-PR hearing aids

myPhonak Jr. App Screen

Your hearing, your way

We believe that hearing is personal, which is why Phonak offers myPhonak and myPhonak Junior. Our innovative apps allow you to personalize your hearing experience, letting you take control of your hearing needs.

Roger Wireless Microphones

Roger™ microphones

Roger is an intelligent wireless technology that transmits speech to the CROS system via RogerDirect™ for better hearing over distance and noise.


Find a provider

Whether you’re looking for help with hearing loss or want to get set up with hearing aids, we can help you find a hearing care professional near you.

Resources and downloads

Find the right hearing aid for you 

Everyone’s listening and communication needs differ, which is why we offer a range of hearing solutions to find the right one for you. 

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The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of such marks by Sonova AG is under license

IOS is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

Android is a trademark of Google LLC.

1 Appleton, J. (2020) AutoSense OS 4.0- significantly less listening effort and preferred for speech intelligibility. Phonak Field Study News retrieved from accessed April 2023.​

2 Woodward, J and Latzel, M (2022) New implementation of directional beamforming configurations show improved speech understanding and reduced listening effort. Phonak Field Study News retrieved from, accessed April 2023.​