Sell Ear Hearing Aid Device Sound Amplifier Super Mini Ear Hearing Amplifier Volume Adjustable Hearing best price

Hearing aid MaxSound Output: 130±5 dB MaxSound Gain: 55±5 dB Harmonic Wave Distortion:≤5％(500Hz) FrequencyRange: 300-4000 Hz Input Noise:≤30 dB Battery: AG13 Button batteries (included 1pcs) Working Voltage: dc1.5V Working Current:≤4mA Color: As the picture shows Item Size: 6.75 x 4.35 x 1.9cm Package Size: 10 x 8 x 3.5cm Net Weight: 7.5g Package included 1 x F-168 Hearing aid 3 x Earplug (different sizes) 1 x User manual 1 x Box ( optional ) Note 1.Adjust volume to the minimum before wearing. 2.Choose an earplug of slightly bigger size to avoid whistler. 3.Increase volume gradually to avoid sudden increase in sound. 4.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. 5.Keep the ear plug clean 6.Remove the battery if you dont use it for long time.