Digital Hearing Aid Rechargeable Behind Ear BTE Sound Voice Amplifier USB Charge

USB Rechargeable: Safe and rechargeable, with a long standby time, no need to replace the battery, environmental-friendly, and power-saving.
Convenient: Easy to operate and use.     One button to switch the working modes, to adapt to different occasions, whether at home or on a noisy street, to bring you clear sounds.
Noise-canceling: Built-in intelligent chip, clear and noise-canceling, no worry about the noisy environment.
Strong shell Anti Falling And Durable high quality hearing aid is designed for the elderly,it still can be used normally even if it fell from two meters high
Comfortable: Made of high-quality material, durable and sturdy, comfortable to wear.    Ergonomic design, soft and flexible, these hearing aids help you a lot in daily life.
Specifications
Maximum Sound Output: 118+/- 4dB
Sound Gain: >= 32dB+/- 2dB
Total Harmonic Distortion: <= 7%
Frequency: 300-3800MHz
Input Noise: <=32dB
Voltage: DC 3.7V
Current: <=2mA
Charging Time: 3 hours
Normal Working Time: 45 hours