?Whistling is Normal?This is a hearing amplifier with automatic on/off. It will automatically turn on after 10 seconds of taking it out of the charging box, and it will automatically turn off and charge after putting it in the charging box. This hearing aid for seniors and adults can be more friendly operations. It comes with 5 different sizes of domes, please choose the right dome according to the size of your ear canal, inappropriate domes are the main cause of whistling. ?Rechargeable Hearing Aids?Our hearing aids use Type-C fast charging and can be fully charged in 2 hours for 35 hours of continuous use. Steady Green Light = Charging Compartment is Charging, Green Light Off = Charging Complete. Steady Blue Light = Hearing Aid is Charging, Blue Light 0ff = Hearing Aid Charging Complete. Please charge it for 10-12 hours before your first time using it. Avoid expenses of buying batteries and charge anywhere with our rechargeable hearing amplifiers for seniors!. ?Intelligent Noise Reduction Hearing Aids?This hearing aid uses the digital chip and has a smarter sound processing and amplification function, which greatly reduces the impact of environmental noise, static electricity, and echo. Wear hearing aids and you can resume enjoying watching TV, talking to others, listening to music, and more.Tip: These hearing aids are suitable for MILD to MODERATE hearing loss, not ultra and severe loss. ?Invisible Design Hearing Amplifiers?The hearing aid is ergonomically designed, soft, comfortable and does not distinguish between left and right ears. It is so stylish that it's like wearing a headset. when you have to wear glasses, the small hearing aid will not steal the space behind your ear. The portable charging box is lightweight and can be charged anytime anywhere. ?Convenient Touch Control Design?Just fingerprint touch, no need to press button or adjust by tool. This hearing aid has 5 looping audio modes, you can click on the smart touch area to select the appropriate sound frequency according to different external environments. It is the best hearing aid choice for the elderly and people with mild and moderate hearing loss.

Control Type: Touchpad Control. Special Feature: Rechargeable. Power Source: Battery Powered. Brand: MUTOOG. Best Sellers Rank: See Top 100 in Health & Household. Country of Origin: China. : B0BDQNZ954. Manufacturer: MUTOOG. Date First Available: September 9, 2022. Package Dimensions: 5.04 x 3.7 x 1.42 inches; 5.54 Ounces.