a) frequency less than 1000Hz when not more than 10%
b) when the frequency is greater than 1000Hz is not more than 6%
c) Equivalent noise: ≤ 26dB.
d) Frequency response: no narrower than 300Hz ~ 3500Hz
Operating voltage: 1.2V
Operating Current: ≤ 4mA
Product weight: 3g
Package: paper + plastic box
Carton Size: 36 * 30 * 26.5cm
Net Weight: 6kg
Instructions :1.The wire plug connected to the headset.Then earplug connector (hard) to the headset, earbuds (silica gel) to connect to the headphone connector pedestal
2.The battery installation: Gently open the battery compartment cover, put a battery into the battery compartment in the right direction, then close the battery compartment .
3.Before you use this item ,you have to turn the ON-OFF switch to Off,and turn the sound volume to minimum
4.Then put this item on you ear, keep it tightly
5.Next, turn this item ON, adjust the volume until you hear clear sound
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.
– Please regularly clean the ear plugs or ear molds in order to ensure the normal use of hearing aids.
– Use for long periods of time, please remove the batteries to prevent battery rot erosion hearing aid components.
1 x Hearing Aid
3 x Earplug(Different Size)silicone adjustable tips