... referenceFor babies and kids, they are recommended to use the high power hearing aid before they are 2 ~ 3 years oldMaintenance ... a long timeProtecting hearing aids from shocks, falling, humidity and high-temperatureWhen not in use, please close the hearing aid to ... the earphone is broken 2012 K-88 Newest rechargeable ear Amplifier ,Audiphone ,Cheap Hearing aids ,Voice Amplifier