1. Hearing Aids These are real hearing aids which apply 8 channel digital sound processing chip, much better than those analog devices selling online (90% online hearing devices are analog). The sound is superior with great noise cancellation, providing a natural hearing experience. A decent choice as a gift for loved ones. 2. Professional Modes There are 2 modes, one for general situation, the other for noisy environment, enabling easy participation in conversations with friends and families, following TV dialog, and being in noisy restaurants or concerts, etc. Only professional OTC hearing aids can these hearing modes. 3. Invisible Incredibly Comfortable 30% smaller than most other CIC devices, wearing this Super Mini model causes no burden. The super mini design an enhanced fit, staying in place and conforming to the natural curve of the ear canal. 4. Rechargeable with Larger Capacity – The compact charging box provides 96 hours backup power for every 2 hours charging. The portable charging case can recharge the hearing aids 4 times without an external power source. After 2 hours of full charge, you can use the pair for 96 hours.