KAIXINWEI VHP-1607B DC3.7V In-ear Hearing Aid Sound Amplifier
2. Double noise reduction, low power consumption, high fidelity, high-quality chip.
3. Small in size and light in weight, it helps you get rid of the shackles of earphone wires, and is convenient for watching movies and enjoying dramas, etc.
4. Ergonomic earplug design, even if you wear it for a long time, you will not feel pain.
5. Specifications:
- Power supply: lithium battery
- Rated operating current: less than 1.4mA
- Frequency response: 300-5000
- High frequency average: less than 106db
- Sound gain: 28db
- Total harmonic distortion: less than or equal to 7+3%
- Equivalent output noise: less than or equal to 2db+3db
- Sound output: 128db
- Voltage: DC3.7V
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