Voice Automatic Blood Pressure Monitor USB Digital Tonometer Arm BP Machine Heart Rate Monitor Sphygmomanometer CE FDA
Questions you care most about before buying?
1.Can the product be charged? What charger is used?
Yes, our products can be charged, you can use your mobile phone or electronic product charger. Can save you money
2.What can I do with the Bluetooth function?
When you don't need to use the hearing aid function, you can turn on the Bluetooth function and you can make calls and listen to songs.
Specifications:
Color: Blue, Beige(Optional)
Charging Type: USB charging
Maximal Sound Output: 118dB ± 4dB
Frequency Range: 400Hz-3800Hz
Equivalent Input Noise Level: ≤ 30dB
Input Voltage: AC110-220V
Output Voltage: DC5V
Rated Power Supply Current Consumption: ≤ 2mA
1) Why there are some background noise?
Actually, it is the electric current sound existing in all good machines. Generally, the higher the power, the greater the static sound.
Turning on after put it in ears, then turn up the sound gradually. Generally, You will get used to it after 2-3 weeks.
2) What causes the squeal?
If the ear dome is not inserted well into ear canal or air leaks at the ear dome edges, when the device is close to hand or wall, a certain amount of sound will go back into the microphone. The sound is re-amplified which causes that annoying whistle.
Try and select suitable ear dome. Put the ear dome into the ear canal and make sure it fits snugly inside. Turning on the device after put it in ears.
3) Why the worked pretty well for a few days but a few days latter them do not work?
Please make sure the device were fully charged.
PLease noticed that the device that you were having problems with. Whether there is earwax on the earplug? Once you cleaned that, they will work better
Package Included:
1x Voice Sound Amplifier Device (High Quality Box Package)
1x Plug
1x USB Cable
1x Brush
1x User Manual
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