1 paio di apparecchi acustici invisibili, cancellatori di rumore audio digitali
2 Hearing aids. 3、Mini appearance and small size, very invisible when wearing；. 1 Hearing Aid Case. Hearing Aid FittingIn the Ear (ITE). Input noise level≤30dB. Full range sound gain 30±5dB. Maximum sound pressure level ≤112±3dB.