Dual Units.Rechargeable Hearing Amplifier.

With 9 Extra Replacement Ear Buds (4 different sizes, L,M,S and XS to fit everyone).

AC adapter & 4 AAA batteries included.

Affordable Price.

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Standard Frequency : 1600Hz

Frequency Range :  between 200 and 6000 Hz

Max.output sound level gain : 29 ± 5dB 0~29dB

Highest sound pressure level for input SSPL 90dB : 118 ± 5dB below 125dB

Equivalent input noise level: Below 29dB

Reference Test Gain : 30dB

Average Saturation Output (HF-Average SSPL 90) : 113 ± 5db

Total Harmonic distortion value : 1600Hz: below 3%;800Hz:below 4%;500Hz:below 4%

Battery Current Drain : below 0.8mA / 2.5V

Battery Type / life expectancy : button size  rechargeable battery.

continuous use: 6~10 hours per charge.

500+ recharges

Size (L/W/H) : <Hearing Amplifier> :  10.5 x 14.4 x 24.0 mm

     <Rechargeable Case>92.0 x 77.0 x 29.5 mm

Weight : <Hearing Amplifier>2.4g <Charging Case>55g

Material :<Hearing Amplifier> ABS /<Rechargeable Case>ABS/<Ear Cap> silicone / <AC Adapter>ABS

"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 not to 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. I am also 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 allow 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."