AXON F-138 Mini Volume Adjustable Invisible Sound Amplifier Hearing

Description:

high quality hearing sound amplifier
Behind Ear style Hearing sound voice amplifier audiphones
Adjust volume to the minimum before wearing,Increase volume gradually to avoid sudden increase in sound
Filter out unwanted noise caused by airflow or wind Deliver direct,and smooth sound right into your ear ,also provide improved technology for reduced electromagnetic interference
Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly

Specification:

Max Saturated Sound Pressure: 130dB+5dB
Sound gain: ≥ 50db
Harmonic Wave Distortion:≤ 5%
Frequency response Range: 300--- 4000 Hz
Input Noise: ≤ 30 dB
Power Voltage :1.5 V
Working Current : ≤4mA
Battery Type: AG13 button cell
Item Size: 40 x 45 x 10mm

Package Includes:

1 Piece F-138
2 Pieces AG3 Button Cells
1 Piece Instruction Manual
1 Piece Case
3 Pieces earplug of different size

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