Sound Amplifiers For Hearing Impaired People The Elderly 

Sound Amplifiers For Hearing Impaired People The Elderly Features : *  Easy carrying *  Long playing time *  Fasion design *  High performance-price ratio *  Tws Hearing aids *  Tws Hearing Earbuds  *  Tws Hearing Amplifier Specification: Maximum total sound pressure level 90 (dB SPL)  ≤115dB+3dB High frequency average total sound pressure level 90 (dB SPL) 110dB±4dB Full sound gain 30dB±3dB Frequency range  F1<400Hz, F2>4700Hz Total harmonic distortion ≤5% Level input noise 29dB+3dB Battery capacity 300mAH Earbuds Battery capacity 50mAH Earphone use time 12 hours…

YT-E16 YT-H012 YT-H010 YT-H706 YT-H711