SPECIFICATIONS

Brand Name: DUTRIEUX
Certification: CE,RoHS
Choice: yes
Hign-concerned Chemical: None
Model Number: F-138D
Origin: China Mainland

In-Ear Hearing Aid is a quality hearing aid which can help you hear the sound clearly and loudly.
Accurate and easy to use.
Volume can be adjusted with 4 levels.
Help you hear the sound clearly and loudly, whether indoors or outdoors.

Max Sound Output: 130dB ± 4dB
Max Sound Gain:  38dB ± 5dB
Harmonic Wave Distortion: ≤5%
Frequency Range: 300~4000 hz
Input Noise:   ≤30 dB
Battery: AG13 button cell battery (included)
Working Voltage: dc1.5V
Working Current: ≤2.5mA

How to use:
Step1: Pair earplug
Choose the earplug as per your ear size
Step2: Equip Battery
Insert the battery according to the positive and negative terminals of the battery
Step3: Start up
Chose battery cover , slide + / - to adjust the volume
Step4: Wear hearing aid
Put the ear hook on the hard of hearing , put the earplug into ear

Product Description: