1. Peak gain (dB): 35dB, suitable for mild to moderate hearing loss
2. Intelligent noise adjustment: reduce the damage of noise to the eardrum.
3. Charging time: 2-3 hours of charging (6 hours for the first charge) can last for a whole day (about 30 hours).
4. Bring different size earplugs to reduce howling and noise.
5. Peak OSPL 90 (dB SPL): 125dB
6. Decibel sound pressure level: 115dB
7. Peak gain (dB): 35dB
8. Frequency range (Hz): 300-5500HZ
9. Distortion: 500Hz: 3.0%, 800Hz: 3.0%, 1600Hz: 5.0%