🎯 Table of Contents

1. Before Wearing
2. How to Wear
3. Key Notes & Troubleshooting
4. Power Operations
5. Volume Adjustment
6. Mode Selection
7. Charging Protocol
8. Maintenance & Feedback
9. Cleaning
10. 21-Day Adaptation Guide

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👂 Hearing Aid User Manual

1. Before Wearing

• Clean your ear canal with a cotton swab before insertion.
• ⚠️ Important: Excessive earwax may block the sound outlet, causing muted audio.

2. How to Wear

2-1 Select earplugs matching your ear canal size.

2-2 Attach the chosen earplugs to the device.

2-3 Insertion Sequence:

• 👂 Put on the hearing aid first
• 🔛 Turn it on afterward

2-4 Adjust volume to your comfort level.

3. ⚠️ Key Notes

• Always use properly fitted earplugs to prevent echoes/whistling.
• Power Protocol: Adjust volume only after securing the device in your ear.

🔍 Troubleshooting: No Sound

1. Verify volume settings match your hearing needs
2. Check battery level/power status
3. Inspect for earwax blockage in sound outlet

4. Power Operations

4-1 ⏻ Turning On:

• Slide switch to "N" → Activates after 10-second boot
• First-time users: Charge 10-12hrs before initial use

4-2 ⏼ Turning Off:

• Slide switch to "O" → Instant shutdown

⚠️ Never cover microphone during use

5. Volume Adjustment

1. Increase Volume:

   • Scroll upward on the control wheel.
   • Confirmation: Short rising tone 🔊.

2. Decrease Volume:

   • Rotate the wheel counterclockwise.
   • Confirmation: Short descending tone 🔉.

⚠️ Key Notes

• Precision: Small adjustments recommended (1-2 scrolls/rotations per click).
• Feedback: Volume level is confirmed by audible tones (no visual indicator).
• Safety: Avoid covering the microphone during adjustments.

6. Mode Selection

How to Switch Modes

1. Ensure Proper Fit:

• Adjust modes only after the hearing aid is securely positioned in your ear.

2. Activate Mode Switching:

• Short-press the "M" button to cycle through modes.
• Audible feedback confirms each selection:
  • 1 beep 🟢 = Normal Mode (default, balanced for daily use).
  • 2 beeps 🟡 = Indoor Mode (optimized for conversations and noise reduction in enclosed spaces).
  • 3 beeps 🔵 = Outdoor Mode (enhanced focus on ambient sounds and wind-noise suppression).

Mode Descriptions

Mode	Best For	Key Features
Normal	Everyday environments	Balanced amplification
Indoor	Meetings, offices, quiet settings	Speech clarity + background suppression
Outdoor	Parks, streets, windy conditions	Ambient awareness + wind buffering

7. Charging Protocol

7-1 Status Indicators:

• Charging: Steady blue light
• Complete: Light turns off

7-2 Best Practices:

1. Initial Charge: 10-12hrs (battery activation)
2. Regular Charge: 2-3hrs → 35hrs runtime
3. Equipment: Use original dock/cable only
4. Positioning: Align correctly on charging dock
5. Environment: Charge at 5°C-35°C (41°F-95°F)
6. Storage: Power off → Keep in dry place

8. Maintenance Note

Clean sound outlet immediately if audio becomes muted or faint.

⚠️ Why Hearing Aids Howl (High-Pitched Whistling)
Understanding the science & solving it simply

-1 The Feedback Loop Explained:
Hearing aids naturally amplify sound, but when:
1️⃣ Poor Seal = Ear canal & earplug mismatch
2️⃣ Sound Escape = Amplified sound leaks out
3️⃣ Re-Amplification = Microphone picks up escaped sound→ Creates continuous loop → Sharp feedback (howling)

-2 💡 Proven Solution:
Your kit includes 4-size earplugs - find your perfect match:

1. Test sizes starting from smallest
2. Ideal fit = Snug seal without discomfort
3. Howling stops = Success!

-3 Bonus Tip:
✅ Always insert fully before powering on
✅ Re-test fit if howling returns (ear canal shape changes seasonally)

9. Cleaning

Regularly clean earplugs and sound outlet as illustrated.

10. 21-Day Adaptation Guide

🌟 The Hearing Journey

Your brain will rediscover sounds like:
🍃 Rustling leaves | 🐦 Birdsong | 👶 Children's laughter

1️⃣ Week 1: Initial Adjustment

• Expect: Amplified background noises
• Action: Start with 30 mins/day → All-day use
• Key Tip: Persist through initial discomfort

2️⃣ Week 2: Active Training

• Progress: Conversations at normal volume

• Exercises:

  1. 🎧 Lyric identification
  2. 📺 TV quiz prediction

3️⃣ Week 3: Full Integration

• Benefits:

  • Reduced mental fatigue
  • Clear environmental sounds

• Activities:

  1. 🍽️ Restaurant dining
  2. 🎬 Cinema visits
  3. 👨👩👧👦 Family gatherings