Specification for CIC Amplifier : Peak OSPL 90( dB SPL) Maximum Output 118±4dB HFA OSPL 90 ( dB SPL) 105dB Maximum (Peak) Gain ( dB )32dB±5dB HFA/FOG Gain ( dB )≤30dB Total harmonic distortion≤2.5% at 500Hz Specification for Rechargeable Hearing Aid Maximum OSPL90 ≤120dB+3dB High frequency aveage OSPL90 103dB±4dB Average gain 23dB±5dB Frequency response range 300Hz~3500Hz Equivalent input noise level ≤35dB Total harmonic distortion ≤10% Work time 40-50Hours Charging time 3Hours PACKAGE INCLUDING 1 Pair Of Rechargeable Hearing Aid (Black) 6x Domes Multiple Size3 x Set Cleaning tool 1 x Case & Manual 1 x Charger And Cable How to reduce feedback for this hearing amplifier? 1. Ensure the Ear Dome fits snugly in your ear canal, if it is too loose, replace with a larger ear dome. Features: 1. both side hearing aid is easy to operate : The rechargeable hearing equipped with a switch key, a volume gear button, and a mode button. CIC Invisible hearing aid :Turn on automatically after installing the battery 2. both hearing amplifier has a built-in dual noise reduction function to reduce external noise. 3. Personal hearing amplifier equipment is comfortable to wear， Noise-reducing hearing amplifier more convenient. 4. Those hearing amplifier has four different modes; high, low, medium, and wide to meet different occasions. Tips 1. Why is there noise or a whistle, how to solve it? Please check that the size of the earbuds (silica gel) is appropriate and that it is tightly in ear canal.
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