Starkey 3 Series I90 CIC Hearing Aid The i90 is a 6 channel hearing aid, which some studies (and many people) agree is the maximum amount of channels that a hearing aid really needs. 3 Series hearing aids are our most advanced line of hearing aids — in a redesigned and easy-to-use style. These reliable, high-performance and virtually waterproof hearing aids are designed to make people’s voices come in clearer and every environment sound better. they’re also designed to enhance the way you listen to music, watch TV and talk on the phone. Starkey 3 Series I90 CIC Hearing Aid Features MILD,MODERATE,MODERATELY SEVERE,SEVERE, Starkey 3 Series I90 CIC Hearing Aid Measurements 12 Channels And 12 Bands Fitting Range 0-90 Db