Specifications:

Item Type: Ear Care

1.BTE Hearing aid

2.Max Sound Output: 129dB ± 4dB

3.Max Sound Gain: 50dB ± 5dB

4.Harmonic Wave Distortion: ≤5%

5.Frequency Range: 450~3500 hz

6.Input Noise: ≤30 dB

7.Battery: AG13 button battery ( included )

8.Working Voltage: 1.5 V

9.Working Current: ≤4mA

10.Color: As the picture shows

11.Item Size: 6.75 x 4.35 x 1.9cm

12.Package Size: 10 x 8 x 3.5cm

13.Net Weight: 7g

Package:

1 x F-138 Hearing aid

3 x Earplug (different sizes)

2 x AG13 button cell battery

1 x User manual

Note:

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.

Keep the ear plug clean

Remove the battery if you don't use it for long time.

"According to the FDA, it is in your best health interest to obtain a professional medical evaluation before purchasing a hearing aid and you are encouraged to do so before bidding on this item. If you choose to not obtain a medical evaluation before purchasing this item, I am required by law to provide to you and obtain from you a signed written waiver of the medical evaluation, and I am required to provide to you a copy of the User Instruction Brochure for a hearing aid, review the contents of that brochure with you, and afford you time to read the brochure. You must provide to me either a signed statement from a physician or a signed waiver before I will deliver this item to you. Upon your request, I will also provide to you a copy of the User Instructional Brochure for the hearing aid or the name and address of the manufacturer or distributor from whom a User Instructional Brochure for the hearing aid can be obtained. "