Features:
The Doosl hearing amplifier is designed for the elderly or people with hearing problems. The voice is able to be amplified that this Doosl Hearing Aids for Ears is well used in the entertainment places. It is a good choice to use this hearing aid that you can feel free to adjust the volume when you're watching TV/films, attending meeting or having a lesson.

Specifications:
Color: Black
Material: Silicone + ABS
Max Sound Output: 130±5dB
Sound Gain: ≥45dB±5dB
Total Harmonic Wave Distortion: ≤5%
Frequency Range: 450~3000Hz
Input Noise: ≤30dB
Current: ≤4mA
Battery: Lithium battery, 120mAh
Charger: DC 5V / 50mA~500mA

Notes:

Don't charge the machine by other chargers or by connecting to computers.
Don't dismantle or change different battery.
Don't use water or organic detergent to clean the hearing aid.
Don't put it in water.
Don't use at high volume for a long time, it will damage your hearing.

Package List:
1 * Hearing Aid
1 * Double Earphone
1 * Charger
1 * User Manual