Hearing Amplifier Digital Rechargeable Personal Hearing Aid 4 Channels Noise Reduction Portable Device for Seniors and Adults Hear Clear Ear Amplifier 1Pack

Products Informations: Item type: G-25 Color: Beige Charging Type: USB charging Charger: DC 5V/50MA-1A Battery: Lithium battery 60MA Size: 45×40x10mm Weight: About 6. 5g Max Sound Output: 129±4dB Sound Gain: 38±5dB Total Harmonic Wave Distortion: ?5% Frequency Range: 400Hz~3800Hz Input Noise: ?28dB Voltage: D.C.3.7V Current: ?2mA   4 Adjustable Amplify Modes Meet Different Occasions "1" Beep: Broadband mode. Suitable for indoor "2" Beeps: Low frequency mode. Suitable for daily life "3" Beeps: High frequency mode. Suitable for outdoor "4" Beeps: Midband mode. Suitable for noisy scen   Packaging? 1*Hearing aids 3* ear tips(different size) 1* USB line 1* User book 1* Gift box