The simplest type of eardrop is ordinary olive oil
ReSound Alera 9 10 Hearing Aid
Alera 9 is speficially designed for those regularly in challenging listening environment, large social functions, outdoors, travel environments in built with a number of features such as Directional MixT, Personalized noise reduction and Environmental Optimizer. The 10 is the smallest of the Alera family, it is a completely in the canal custom made mould hearing aid. With its small features/batteries it has a dexterity rating of 1 thumbs up.