Wired Pocket Digital Hearing Aid Sound Amplifier Ear Acousticon Battery Powered

Feature 1 Lightweight and compact easy to carry and wear 2 Come with different size earplug to fit your needs 3 Offer your old people a clear sound world and better talk 4 Special design you can put it on your pocket or clip on your clothes Operation 1 Open the battery cover insert the AAA battery to the hearing aid in correct direction 2 Connect the L plug to the earphone socket then put the earplug on the earphone 3 Push the earplug deeper in your ear 4 Switch your hearing aid on and adjust the volume to get clear sound 5 Put the hearing aid on the pocket or clip on your clothes Warm Tips Keep the ear plug clean Adjust volume to the minimum before wearing Remove the battery if you dont use it for long time Choose an earplug of slightly bigger size to avoid whistler Increase volume gradually to avoid sudden increase in sound If you hear a howling check the ear silica gel is appropriate and whether the size of plug is tight choose the appropriate earplugs and plugged make sure of no air leakage Description Material ABSColor BlackInput Noise 30dBWorking Current 4mAWorking Voltage DC 1 5VMax Sound Output 1294dBMax Sound Gain 58dB5dBFrequency Range 450 3500hzBattery 1 AAA Battery included Harmonic Wave Distortion f1000Hz15 f1000Hz10 Hearing Cable Length 98cm 38 58 appr Size L X W X H 61X41X27mm 2 40X1 61X1 06 appr PackageIncluded 1X Hearing Aid1X Earphone Line1X AAA Battery1X User Manual4X Earplug different sizes More Detai