Deaf Hearing Aid amplifies sound from the microphone straight to your headphones to give enhanced hearing and it is designed to help for people with hearing disabilities. Thank you for supporting us ■Deaf Hearing Aid App Features ? ----------------------------------------------------- ★Set easily left and right earphone volumes. ★Easy to use - no special devices, no battery replacements. ★Provides the best sound quality with sampling rate - 44.1 kHz. ★Full gain up to 30 dB with a standard he