Rechargeable an aid:

Max Sound Output: 129 db + / - 3 db
Max Sound Gain: 38 b + / - 5 db
Harmonic Wave Distortion: 5% or less
Frequency Range:  450 ~ 3000 hz
The Input Noise: 30 dB or less
':  Lithium '      
The Working Voltage: 3.7 V DC                 
The Working Current: 15 ma or less    
1. The New an aid
2. Rechargeable BTE an aid
3. The Lithium ',

4. Superior sound quality

\"Please read the product manual carefully or purchase and use the product under the guidance of the medical staff\"