Rechargeable Hearing Aids For Deafness In Ear Sound Amplifier Mini Invisible Wireless Headphones With Adjustment 1Pair

▶Product feature: 1.7-channels+ 12 frequency bands 2.Intelligent full frequency noise reduction (12dB) 3 listening programs 4.Multi-modal silencing feedback processing system 5.Three-level wind noise control, strong sound blocking 6.Three-in-one program button 7.Program tone, low voltage tone 8.Volume memory, program memory

▶Technical Specification：1.MAX OSPL 90(dB SPL):1112 2.HFA OSPL90(dB SPL):107 3.Peak Gain(dB):35.8 4.HFA FOG(dB):30.1 5.Frequency Range:F1s200Hz~F2z4700Hz 6.THD at 500Hz:0.6%

THD at 800Hz:0.5%

THD at 1600Hz:0.3% 7.Eq.Input Noise Level(dB):22.7 8.Battery Current Drain(mA):1.18 9.Attack Time(ms):6 10.Release Time(ms):62 11.Packing: a）Hearing Aids* 1Pair (Black) b) Charging Case* 1Pcs c) Charging Cable* 1Pcs d) Ear Domes *6 small*2 middle*2（in the IAids） Large*2 e) Wax Guards f) User Manual

▶Prompt: There are Whistle as you put the battery into the hearing aid .Please donot worry .because the air presure will make Whistle. ​1.Please adjust lower volume . ​2.Choose the suitable ear plug ​3.Make sure if you put the earplug tightly,sound leak will make the Whistle.