Accurate and easy to use
Volume can be adjusted with 4 levels.
Help you hear the sound clearly and loudly, whether indoors or outdoors.
Maximum loudness 130 +/- 5dB.
Sensitivity: >= 50dB.
Frequency range: 300Hz ~ 4000Hz.
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
The degree of hearing loss level
00-40 dB: normal
41-55 dB: mild to moderate hearing loss (inaudible little voice, face to face short-range loud (normal) speech audible)
56-70 dB: moderate deafness (basically talking loudly on the face of the exchange, the exchange of other cases is very difficult)
71-90 dB: severe hearing loss (basic language can not communicate, you need to talk loudly in the ear can hear a little)
90 db: very severe hearing loss (need ear can only hear the cries of force shout, usually basically silent world)
Hearing aid knowledge
Caution, warning prompt statements
* If you hear howling check earplugs (silicone) size is appropriate
Choose a suitable each ear, ear canal size and plugged seal, do not leak.
* Not using, please remove the battery to avoid battery decay erosion hearing aid parts.
* Periodically clean earplugs or ear molds to ensure the normal use of hearing aids.
* Shock, drop, moisture, high temperature.
2 x Powertone F-138 In-Ear Hearing Aid
4 x LR44 1.5v Battery
6 x Earplug
2 x Manual
Your product will be packaged and shipped within 2 days of ordering. All products are shipped from USA warehouses to ensure fast shipping! Shipping can take up to 10 days. If located outside USA, please allow an additional 5 days. Tracking info will be emailed to you as soon as it gets shipped out.
We believe our products can help people's everyday lives, and we fully stand by our products. We offer a risk-free 30 day day guarantee on all our products. If you don't have a great experience, we will ensure you are 100% satisfied with your purchase.
1. No Risk, 30-Day Returns
3. 100% Quality Inspection on every package before delivery
4. FREE Shipping on all USA orders!
5. Safe Payments via Credit/Debit Card and PayPal
6. Tracking available on every order
7. Help when you need it! Email us for help