Relief Ear Problem Aroma Fragrance Beeswax Ear Candle
US $0.16-$0.19
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Maximum saturation pressure (± 4dB): | 130 |
The gain: | 30dB±5dB |
Frequency range: (Hz): | 100-5000 Hz |
The equivalent input noise: | (± dB) ≤ 28 |
Harmonic distortion rate (%): | ≤ 4 |
Continuous working time: | (H) ≥ 10 |
Battery capacity: | 40MA battery is a rechargeable battery |