Features:
-There are five levels of volume control with beep prompts.
-Equipped with portable charging case, 3-4 hours to full power of the case, can offer totally 36-90 hours of use.  
-The operation is simple, long press to turn on and short press to adjust the volume, making it convenient for the elderly to use.
-High-definition sound quality enables barrier-free communication, and the full-scale gain is greater than 35dB.
-The cochlear ergonomic design is comfortable to wear and can be used for a long time.

Specification:
Material: ABS+silicone
MAX OSPL90 (dB SPL): ≤115dB+3dB
HFA OSPL90 (dB SPL): 110dB±4dB
FOG：30dB±3dB
HFA FOG：29dB±3dB
Frequency range: F1<400Hz, F2>4700Hz
THD 500Hz：≤5+3%
THD 800Hz: ≤5+3%
THD 1600Hz: ≤5+3%
Equivalent input noise: 29dB+3dB
Battery capacity (charging box): 300mAh
Battery capacity (earbuds): 50mAh
Charging time (earbuds): 1-1.5 hours
Charging time (charging box): 3-4 hours
Binaural use: yes
Suitable range: from mild to moderate (between 26-55dB hearing loss)

Package Included:
1x Pair of hearing aids
1x Brush
1x Charging cable
6x Sets of domes
1x Charging box
1x User manual