BTE Hearing Aid Voice Sound Amplifier AXON F-138 Hearing Aids Behind Ear Adjustable Health Care
1.Max sound out put:130+/- 5dB
2.Sound gain:>= 50dB
3.Total harmonic wave distortion:<= 5%
1 x F-138 BTE Hearing Aid
1 x LR44 1.5v Battery
3 x earplugs
1 x Manual
1,It can be used for sound amplifier
2,When you watch movie,enjoy the drama,attend meeting,or have classes,the product can help you to hear the sound clearly and loudly
3,While in forest,if you want to hear very slight sound,it will be a good choice
1,Open the cartridge cover,put the battery in correct direction,Zinc Air Battery is best choice and has longer life
2,Before using switch the volume to the minimum position
3,Put the ear hook on your ear,plug in the ear plug tightly
Adjust 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 clean
Remove the battery if you don’t use it for long time.