1. Cybersonic Hearing aid, 2. Behind the Ear. 3. Enjoyed quite good selling with it's competitive price and nice shape. CybersonicHearing aids Behind the Ear(BTE)max.saturation sound pressure level:125dbfull-on acoustic gain>45dbfrequency response:450-3800hzEquivalent input noise:<30dbOperation voltage:1.5vOperation Current:10.8mA
[China Manufacturers]