Axon Hearing Aid F137

Product Description :

Imported Axon Hearing Aid F137 behind the ear (BTE) is satisfying the needs of the hard of hearing : Sound Amplifier Ear Machine Brand AXON Model F-137 Color Light Yellow Material Plastic Quantity 1Piece Specification Ear Coupling Ear-hook Sensitivity > / = 50dB THD < / = 3 % Noise < / = 30dB Maximum Loudness 130 + / – 5dB Cable Length 0cm Frequency Response 300-4000Hz Battery included or not Yes Power Supply AG5 Battery Number 1 Working Voltage 1.5V Dimensions & Weight Dimensions 1.77 in x 1.77 in x 0.98 in (4.5 cm x 4.5 cm x 2.5 cm) Weight 2.86 oz (81 g) Packing List 1 x Hearing aid 4 x Earbuds 2 x Batteries 1 x English user manual.

Important Note:

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.
If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. 
Keep the ear plug clean

Remove the battery if you don’t use it for long time.

Package Contents :

1. Hearing Aid
2. 2 Batteries
3. Ear Plug different Sizes
4. User Manual