Personal Sound Instant fit BTE sound amplifier For Moderate Loss Genuine Packing Axon V 163BTE Hearing Sound AmplifierBehind the ear Hearing Amplifier with Volume Control wheel & On-Off switchSuitable for users with Mild to Moderately Severe Hearing Loss. Axon V 163 Axon V-163 Behind The Ear Hearing AmplifierAdjust volume to the minimum before wearing.Choose an earplug of slightly bigger size to avoid whistler.Increase volume gradually to avoid sudden increase in sound.Keep the ear plug cleanAxon V 163 is a Behind the ear sound amplifier which is lightweight and can be used in either earDedicated On-Off switchSleek and comfortableStandard DescriptionsInstant FitInstant Fit No programming requiredRouged & RobustRobust Housing which is tried and tested in challenging environments – for greater reliability.Easy Volume ControlEasily adjust volume using volume control wheelStandard Technical SpecificationsMax Sound Output:130dB ± 5dBMax Sound Gain:≥50 dBHarmonic Wave Distortion:≤5%Frequency Range:300-4000 HzInput Noise:≤ 30 dBBattery:Size 675Working Voltage:DC 1.5 VWorking Current:≤ 4 mA