1. Mini size, can be well hidden in your ears.
2. Bionic design: specially designed for the hearing impaired, the ear canal fits better. No pain even with prolonged use.
3. Long working time: One A10 battery can last for about 60 hours, which is convenient and practical.
4. Peak OSPL 90 (dB SPL): 110dB
5. HAF OSPL 90 (decibel sound pressure level): 105dB
6. Gain (MAX): 30dB
7. HAF/FOG gain (dB): 26dB
8. Frequency range (Hz): 500-4500Hz
9. Distortion: 500Hz: 5%, 800Hz: 3%, 1600Hz: 3%