ITEM NAME:Mini Hearing Aid Aids Sound Amplifier Hearing Assistance Deaf Aid AXON X-136 img *{margin:0;padding:0;.Pocket Hearing aid. 1 Piece X-136 Hearing aid. If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.
