Product details
The ReSound Key 4 ITC combines compact in-the-canal design with advanced digital processing and wireless streaming capability. Designed for individuals who prefer a custom, less visible hearing aid style, this ITC model offers dependable daily performance along with smartphone connectivity.
With a 20–110 dB fitting range, it supports users with mild to severe hearing loss, providing natural sound amplification while maintaining wearing comfort.
Advanced Sound Processing
- 12 WARP Compression Channels – Natural and balanced sound clarity
- Adaptive Directionality – Focuses on speech in noisy environments
- Natural Directionality II – Preserves spatial sound awareness
- Noise Tracker II – Reduces background environmental noise
- Wind Guard – Minimizes wind disturbances
- DFS Ultra II Feedback Cancellation – Prevents whistling
- Impulse Noise Reduction – Softens sudden loud sounds
- Environmental Classifier – Automatic environment detection
These features enhance speech intelligibility in both quiet and moderate noise conditions.
Wireless Streaming & App Support
- Made for iPhone®
- Android™ ASHA compatible
- Direct audio streaming from compatible smartphones
- Phone call streaming
- ReSound Smart 3D App control
- 2.4 GHz wireless connectivity
- Tinnitus Sound Generator support
- Remote fine-tuning support
Enjoy direct streaming without external accessories (on compatible devices).









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