- Brand Name: FEIE
- Origin: China Mainland
- Model Number: 430S
- Product type: FEIE rechargeable hearing aid
- suitable for: mild to moderate hearing loss
- Warranty:: 1 year
- Propertie:: Rehabilitation Therapy Supplies
- advantage:: comfortable, portable rechargeable
- Volume:: Can be adjusted
130nm full digital signal processing chip
4-channel automatic volume control (WDR)
Super cardioid pickup
Medium power output, low distortion
Adaptive feedback cancellation
Layered noise reduction
Auto save volume and mode
One-button multi-function boot delay prompt tone
3 program modes: turn on when out of the box, turn off when in the box
Mode switching beep Magnetic charging
Volume change beep Low battery warning light
Maximum output (OSPL90): 117+3dB
Average output (HAF OSPL90): 108±4dB
Maximum gain (FOG50): ≤40+5dB
Average gain (FHA Avg): 26±3dB
Equivalent input noise: ≤30dB
Bandwidth range: F1≤200Hz F2≥3500Hz
Distortion (500, 800, 1600)≤3%
Rated current consumption: NA
Principal machine * 2
Earplugs * 3
Cleaning sweeper * 1
Warranty card * 1
User manual in English * 1
USB Cable* 1 Charger*1
That is normally situation that hearing aid make whistle noise .
About noise , you can do this steps to remove it .
-Adjust volume to the minimum before wearing.
-Choose an earplug of slightly bigger size to avoid whistler.
-Increase volume gradually to avoid sudden increase in sound.
-If you hear a howling,check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.