In Cosmo 4, now people can enjoy superb sound directly in their ears. It has crystal light hearing for daily listening situations. It is nano coating with unique thin covering that repels dirt and humidity, meaning increased reliability. This product is small and stylish hearing instruments and is lifetime usable. Feedback Manager Plus enables Cosmo to target and remove whistling sounds. Soundscape technology permit you to immerse yourself in the best available 360 degrees listening experience and lets you focus on speech, even in noisy surroundings. Cosmo 4 is a family of leading best in class wireless hearing instruments for customers who want great sound in everyday listening situations. There is no annoying sound delays or echoes and no uncomfortable adaptors worn around the neck. The small, stylish, discreet wireless hearing device lets people hear many things with rich, light sound. ireless capabilities are available with Cosmo as it is compatible with our newest line-up of wireless accessories