OPARYY Hearing Aids Headphone Amplifier Personal Sound Amplifier Volume Control
Product ID: 66798959
Description
- 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.
Pocket Hearing aidMax Sound Output: 129±5 dBMax Sound Gain: 55dB ± 5dBHarmonic Wave Distortion: ≤5%Frequency Range: 450~3500 hzInput Noise: ≤30 dBWorking Voltage: dc1.5VWorking Current: ≤4mAColor: As the picture showsItem Size: 6.6 x 4.3 x 1.6cmPackage Size: 8.5 x 12 x 3.3cmNet Weight: 29gPackage included:1 x F-16 Hearing aid4 x Earplug (different sizes)1 x User manual1 x BoxNote: no battery
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