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| Brand Name : | Retone | 
| Model Number : | K419 | 
| Certification : | FCC, CE,FDA, RoHs | 
| Price : | $199-$219/Units >=100 Units | 
| Delivery Time : | 5-8 days | 
Rechargeable invisible hearing aid sound amplifier with noise reduction
HEARING BETTER and SOFTER: If you are experiencing mild to Moderate hearing problems and need sounds to be amplified to hear comfortably, then the hearing amplifier could be the ideal solution.
Super Effective Hearing Assist - With noise reduction, these small devices will bring you back in
the clear world.
Completely-in-Canal - Very small and lightweight, no burden for ears for long time
using. Great for people wearing glasses or masks.
State of the Art Design - Blue device for left ear, red device for right ear, pure white
magnetic charging base. Nice appearance and easy to tell the two
devices' direction. Obvious On/Off button for easy operation.
Rechargeable - Place it in the charging base, you will get a 24 hours using
duration. As easy as charging a mobile phone - no need to dealing
with batteries any more.
Ear Protection Output - Automatic sound gain control-output for hearing protection,
won't suffer from sudden loud noise.
| K419 Rechargeable hearing aids | Analog ear canal | 
| Maximum output (dB SPL):115 | Frequency range (Hz):250-5500 | 
| Average output (dB SPL):105 | Harmonic distortion: 500Hz: 2% | 
| Full gear gain (dB):40 | Harmonic distortion: 800Hz: 2% | 
| Average gain (dB):32 | Harmonic distortion: 1600Hz:2% | 
| Battery Capacity (mAh):25mAh | Internal noise (dB):20 | 



                                 
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