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Small hearing aids
Designed for Comfort

Phonak Slim™

  • Comfortable design
  • Unique contour
  • SmartSpeech™ Technology

Offering no compromise between comfort, design and performance, Phonak Slim is the perfect match for the modern world. A unique ergonomic shape contoured to naturally nestle behind your ear - even if you wear glasses. Its state-of-the-art hearing performance enables you to confidently immerse in conversations and effortlessly maneuver through life’s countless listening situations.

  • Unique ergonomic shape designed for comfort
  • Improved speech understanding1,2,3,4,5
  • Universal connectivity
  • Fully rechargeable
Phonak Slim
Hearing Technology Innovator 2023

Hearing Technology Innovator 2023

Phonak Slim is the winner of the Hearing Technology Innovator Award 2023 in the Hearing Aids Design category - Recognized by Health & Technology Matters

Woman wearing small hearing aid having conversation

Comfort redefined with proven performance

63% of people rate Phonak Slim as more comfortable to wear compared to their own hearing aids⁶ and 67% of people rate Phonak Slim as more secure when wearing glasses compared to their own hearing aids⁶. When combined with proven Phonak technology, Phonak Slim lets you navigate the world with renewed confidence.⁷

State-of-the-art technology

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.1,2,3,4,5 This technology demonstrates Phonak’s dedication to providing the best possible solution for speech understanding and the topic of well-being, as scientific literature has shown how reducing listening effort can free up cognitive resources. 8

Boost speech understanding in noise and over distance with Roger™ microphones

Confidence, versatility and elegance come together with Roger microphones. Combining Phonak Slim and Roger On provides a unique solution to fully participate in conversations. By improving speech understanding in group conversations9, Roger On allows you to be you, wherever you are.


Comfortable. Unique. Connected.

With Phonak SmartSpeech™ Technology, Phonak Slim hearing aids provide features that improve speech understanding while offering a unique ergonomic shape designed for comfort. 

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Color options to match your lifestyle

Small hearing aid in charging case

Charger options

The Phonak Slim Charger is compact, with a sleek appearance which perfectly complements Phonak Slim, charging the hearing aids in just three hours to offer a full day* of hearing.

  • Charges Phonak Slim in just 3 hours
  • Conveniently shaped with a solid stance
  • Easy to clean; easy to carry
  • Optimized charging and usability

Where comfort meets design

Comfort is one of the key factors when purchasing a hearing aid.7


Phonak Slim is designed with your comfort and lifestyle in mind and is made to perfectly embody your confidence. 

Where comfort meets design

73% of people rate Phonak Slim as very comfortable6

Connects to smartphones and other devices

Connects to smartphones and other devices

Phonak Slim pairs with the myPhonak app and Bluetooth® enabled devices to help you connect with the world around you.


Empowers hearing aid wearers to personalize their hearing experience. It allows them to not only take control of their hearing with remote control functionality, but to also track their health data**, unleashing healthier versions of themselves.

Roger™ microphones

Roger is an intelligent wireless technology that transmits speech directly to Slim hearing aids via RogerDirect™, helping to overcome distance and noise.

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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.

Need product support?

  • Troubleshooting
  • FAQ
  • Compatibility

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.

*16 hours of battery on a single charge, including 8 hours of everyday listening, 4 hours of Bluetooth streaming and 4 hours of TV streaming. Battery life may be minimally reduced when using ActiveVent Receiver.

**In order to access health data, it is necessary to create an account within myPhonak app

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

2. Latzel, M., & Hobi, S. (2022). ActiveVent™ Receiver provides benefit of open and closed acoustics for better speech understanding in noise and naturalness of own voice perception. Phonak Field Study News.

3. Thibodeau L. M. (2020) Benefits in Speech Recognition in Noise with Remote Wireless Microphones in Group Settings. Journal of the American Academy of Audiology, 31(6), 404–411.​ 

4. Latzel, M., Lesimple, C., & Woodward, J. (2022). New implementation of directional beamforming configurations show improved speech understanding and reduced listening effort. Phonak Field Study News.

5. Latzel, M., Lesimple, C., & Woodward, J. (2023). Speech Enhancer significantly reduces listening effort and increases intelligibility for speech from a distance. Phonak Field Study News.

6. Please contact if you are interested in further information

7. Sonova proprietary research. (2021). Project ID#4428. Please contact if you are interested in further information

8. Sarant, J., Harris, D., Busby, P., Maruff, P., Schembri, A., Lemke, U., & Launer, S. (2020). The effect of hearing aid use on cognition in older adults: Can we delay decline or even improve cognitive function? Journal of Clinical Medicine, 9(1), 254.

9. Thibodeau L. M. (2020). Benefits in Speech Recognition in Noise with Remote Wireless Microphones in Group Settings. Journal of the American Academy of Audiology, 31(6), 404–411.