What's in the box:

Mini Size Inner Ear Invisible Hearing A-id 4 Levels Volume Adjustable Control Hearing Aids Ear Sound Amplifier Audiophone for the Old (Standard)

Designed forthosewhogot hearing problems, suitable for hearing loss or patients. Low p-ower consumption, high-fidelity, fine quality chip, invisibility fleshcolor surface will not incongruity in the crowd. Light weight and easy carrying provides you better use performance.

Features:
Designed for old people or people with hearing problems, suitable forhelping hearing loss or patients.
Low p-ower consumption, high-fidelity, fine quality chip, invisibility fleshcolor body will not incongruity in the crowd.
4 levels volume control to fit your own needs and preferences.
Compact design makesiteasycarryingand space-saving.
Made of superb ABS material for long-lasting, equipped with soft earmuff providing you nice wearing.

Specifications:
Material: ABS
Max sound output:130dB 5dB
Sound gain: 50dB 5dB
Total harmonicwave distortion: 5%
Equivalent input noise level:30 dB
Frequency range: 450-3500Hz
Voltage: DC1.5V
Working current:4mA
Color: As pictures
Battery: 1 * lithium battery, 1.5V, 150mAh (included)
Package size: 100 * 80 * 30mm / 3.9* 3.1 * 1.2inches(Length * Width * Height)
Package weight: 56g / 2ounces

Packing List:
1 * Sound Amplifier Host
3 * Ear Plug
2 * Cell
1 * Instruction