F-138 Mini In-ear Digital Best Invisible Sound Enhancement Deaf Volume Amplifier Adjustable Tone Hearing Aids Aid Ear Assistance
Technical Details
| Battery Type: | AG13 button cell battery (included) |
| Brand Name: | MAANGE |
| Frequency Response Range: | 300--- 4000 Hz |
| Harmonic Wave Distortion: | ≤ 5% |
| Input Noise: | ≤ 30 dB |
| Item type: | Toiletry Kits |
| Material: | Silicone |
| Max Saturated Sound Pressure: | 130dB+5dB |
| Model Number: | Hearing Aid |
| Power Voltage: | 1.5 V |
| quantity: | 2 |
| Size: | 20 X 20 X 20 mm |
| Sound Gain: | ≥ 50db |
| Working Current: | ≤4mA |
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