If the earmuffs are not fully inserted into the ear canal, or if the air leaks out of the earmuffs, it will cause an annoying whistling sound. -Specially designed for hearing-impaired people, more suitable for the ear canal.

Brand: Unbranded
Type: Hearing Aid
Features: Rechargeable
To Fit: Both Ears
Hearing Aid Fitting: In the Ear (ITE)
Items Included: Hearing Aid Cleaner
Sound Processing: Digital
Power Source: Docking station/ case
Country/Region of Manufacture: Unknown
Department: Adult
Model: Inner-Ear Personal Device
Unit Quantity: 2
Model Number: Rechargeable In Ear Sound Amplifier
Custom Bundle: No
Type 2: Rechargeable Hearing Aid In-Ear
Type 3: Digital Rechargeable Mini Hearing Aids
Type 4: Hearing Amplifier