Origin:China Mainland Model Number:GM-100A Place of Origin::Guangdong, China Product name::Hearing Aid Feature::Rechargeable Battery::Rechargeable Battery Advantage:Noise Reduction Feedback Cancellation Function::Improve Hearing Full sound gain::38 ± 5 decibels Battery current::≤2 mA Feature:Eco-friendly Frequency response range::500 Hz-3500 Hz Equivalent input noise level::≤32dB High frequency average::120±4 dB
