Description:
Are you or your friends strggling with hearing impairment? Have a look at this professional hearing aid. It is smaller and lighter￡? which is more comfortable to wear. Its volume is adjustable and moistureproof. Why not buy it for yourself￡? your relatives or your friends?

Features:
Suitable for people with hearing impairment.
Small size and light weight￡? easier and more comfortable to wear.
4 kinds of volume is adjustable. "1" is the minimum volume and "4" is the maximum.
"O" is for power off￡? "N" is for power on.
Earplugs in 2 different size can fit most of people's ears.
High quality￡? it can filter the noise caused by air flow and keep sounds more clerly.

Specifications:
Type: Hearing Aid
Model: F-139
Material: Acrylonitrile Butadiene Styrene
Color: Brown
Maximal Sound Output: 130dB ?? 5dB
Sound Gain: ?ò 50dB
Harmonic Wave Distortion: ?? 5%
Frequency Range: 300-4000 Hz
Input Noise: ?? 30dB
Battery: 1 * AG13 Button Cell
Maximal Working Hours with Standard Battery: 70Hours
Working Voltage: Direct Current 1.5V
Working Current: ?? 4mA
Item Size: Approx. 4.8 * 4.9 * 2.0cm / 1.9 * 1.9 * 0.8in (L * W * H)
Item Weight: Approx. 10.0g / 0.4oz
Total Size: Approx. 9.5 * 7.3 * 3.2cm / 3.7 * 2.9 * 1.3in (L * W * H)
Total Weight: Approx. 48.0g / 1.7oz

Notes:
1. Please read the user manual before using.
2. To protect your hearing￡? please don't use this product at a high volume for a long time.

Package List:
1 * Hearing Aid
2 * AG13 Button Cell
2 * Earplug
1 * Component
1 * Operation Manual