F-Aid4

F-Aid4 Behind-the-Ear Hearing Aid

Intended Use: Custom-fitted hearing aids designed to compensate for hearing loss caused by conductive hearing impairment.

Key Product Specifications

Digital Signal Processing Channel	64-Channel WDRC
Frequency Response Range	200 Hz – 6,000 Hz
Maximum Sound Gain (HFA)	40 dB
Maximum Sound Output (OSPL90)	110 dB ± 5 SPL
Bluetooth version	Dual-Mode 5.3
Streaming Features	Direct Connection for Calls, Music, and TV
App Smart Interaction	Support (self-adjusting)
Feedback Suppression	Standard Feedback Suppression
Use Cases	4 Basic Scenarios
Dust and Water Resistance Rating	IPX5
Battery Life (Hearing Aid Mode)	22 hours
Charging Methods	Magnetic Contact Fast-Charging Case

Product Features

Classic Bluetooth

Supports mobile calls and direct audio connection to TVs, allowing you to listen to music, take calls, and watch videos. The hearing aid battery life lasts up to 22 hours.

RIC Invisible In-Ear

The receiver fits directly into the ear canal and, combined with an ultra-thin guide wire and open-back earbuds, offers both comfort and a discreet, aesthetic design.

APP Smart Fitting

Take a hearing test via the mobile app to find a personalized hearing solution.

Smart Charging Case

Equipped with a color display and a startup animation, it can independently display the remaining battery level and charging progress for the charging case and the left and right hearing aids.