Banggood Mini Rechargeable Hearing Aid Low-Noise Wide-Frequency One-Click Operation Sound Amplifier Deaf Hearing Aids

SpecificationsSource Method: USBRated Voltage: 5VRated Power: 15WMaximum OSPL90: ≤117dB±3dBHigh frequency average OSPL90: 109dB±4dBAverage gain: 25dB±5dBFrequency response range: 400Hz-4500HzEquivalent input noise sound level: ≤29dB+3Total harmonic distortion: ≤7%Related power supply: ≤6mAFeatures:•3 handy earplug sizes for customized comfort.•Just 1 button to adjust sound input.•Fast USB charging with long battery life.•Portable case with lights to indicate charge.Charging instructions:The case: Take the included charging cable and plug it into the port. When charging, the case will show a blue indicator light. Once the box is fully charged, it will change to white.The hearing aids: Carefully place them into the charging box. A blue light will be displayed while charging and a white light when they are fully charged.Package Included:2 x Hearing aid1 x Case1 x User Manual