Product details
The ReSound Key 4 CIC Hearing Aid is designed for users who prefer maximum cosmetic discretion. Positioned deeper inside the ear canal compared to ITC models, the CIC design offers reduced visibility while maintaining stable digital amplification and clarity.
With a 20–105 dB fitting range, this model supports mild to moderately severe hearing loss, delivering balanced speech understanding and controlled amplification.
Advanced Sound Processing
- 12 WARP Compression Channels – Fine-tuned frequency shaping
- Adaptive Directionality – Enhances focus on speech
- Natural Directionality II – Preserves spatial hearing cues
- Noise Tracker II – Reduces steady background noise
- Wind Guard – Minimizes wind interference
- DFS Ultra II – Advanced feedback cancellation
- Impulse Noise Reduction – Controls sudden loud noises
- Environmental Classifier – Automatic environment detection and adjustment
These technologies support comfortable hearing across everyday listening situations.
Compact & Comfortable Design
The CIC style offers:
- Deep canal placement for discreet appearance
- Custom-made shell for secure fit
- Lightweight and comfortable wear
- Manual program/volume adjustments (model dependent)
Powered by Zinc Air 10A battery, providing reliable daily operation in a compact size.










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