Features:
1. The hearing aid uses advanced noise reduction technology to provide clear, high-quality sound
2. Rechargeable, no need to frequently replace batteries.
3. Equipped with a charging box, it is easy to charge and carry, ensuring that your hearing aid is always available.
4. The in-ear design of the hearing aid is comfortable to wear and low-profile, providing an excellent listening experience without attracting the attention of others.
5. Easy to operate, safe for the elderly to use

Parameters:
1. Peak OSPL 90 (dB SPL): 119+/-3dB
2. HAF OSPL 90 (dB SPL): 112+/-3dB
3. Peak gain: 32dB
4. HAF/FOG gain: 28dB+/-5dB
5. Frequency range: 300-4500Hz
6. Distortion: 500Hz: 2%, 800Hz: 1%, 1600Hz: 3%
7. Equivalent input noise: less than or equal to 26±3dB
8. Battery: built-in lithium battery, current 0.8mA
9. The hearing aid includes a 35mAH battery, which takes about 2~3 hours to fully charge and has a working time of 25~30h
10. The charging box includes 400mAH battery, fully charged in about 2 hours