Rechargeable Hearing Aids for Seniors & Adults, Noise Cancelling, Digital Hearing Aid Sound Amplifier with Charging Case

Technical Parameters

• Maximum OSPL90: ≤120dB ±3dB
• Average Output Sound Pressure Level: 112dB ±4dB
• Full Sound Gain: 38dB ±2dB
• Equivalent Input Noise Level: ≤32dB ±2dB
• Frequency Response Range: 300Hz - 8000Hz
• Total Harmonic Distortion: ≤5%
• Built-in Lithium Battery: 55mAh
• Single Use Time: 48 hours
• 1 Pair of Hearing Aids

Recommendations

1. For first-time users, select the low-frequency mode for the first 1-2 weeks, adjusting the volume to the most comfortable level for adapting to the hearing aid.
2. Avoid wearing the hearing aids for extended periods. Rest every 30 minutes to prevent discomfort.
3. After the adaptation period, try switching modes and wear the device while engaging in conversations. Continue to experiment in various environments to find the most comfortable setting.

Question & Answer

1. Why is there no sound when wearing it?

• a) Ensure the volume is suitable for your hearing.
• b) Check if the hearing aid is charged.
• c) Verify that there is no earwax blocking the ear canal.

2. Why is there a whistling (sharp sound)?

A whistle indicates improper wearing. If the ear tip doesn't fit the ear canal properly, sound from the receiver is picked up by the microphone and amplified, causing feedback.

Solution: Choose the appropriate ear tip size for your ear canal and ensure it fits snugly.

3. How can I care for my hearing aid?

• a) Keep hearing aids away from heat and dust.
• b) Clean hearing aids regularly, as earwax and ear drainage can cause damage.
• c) Avoid using hairspray or other hair care products while wearing hearing aids.
• d) Turn off hearing aids when not in use.

4. Tips for Better Care of Your Device:

• a) Failing to clean hearing aids or cleaning them incorrectly.
• b) Dropping hearing aids on hard surfaces.
• c) Storing hearing aids in moist or hot places like bathrooms or cars.
• d) Exposing hearing aids to moisture, heat, or aerosol products (e.g., while showering, swimming, blow-drying hair) can cause damage or malfunction.

Note: Charge the hearing aid and charging case for at least 10-12 hours before first use.

Additional Tips:

1. USB rechargeable hearing aids – no need for frequent battery replacements.
2. Choose earplugs that fit the ear canal to prevent noise leaks.
3. Ensure the correct wearing method to avoid feedback and whistling.
4. Do not touch the speaker (used for reception) during use, as it may cause noise.
5. Expect some initial noise when using hearing aids for the first time.