🎯 Table of Contents

1.Wearing

1. Clean ears → Test 4 earplug sizes → Insert BEFORE powering on
2. Perfect seal = No whistling

2.Operation

• Volume: Slide up/down → Max beep alert at Level 5
• Power: ON only after insertion → OFF when unused

3.Critical Alerts

• Immediate cleaning if sound mutes (earwax blockage)
• Recharge instantly when volume drops
• Unplug charger post-charging

4.Charging Protocol

• Initial/Storage: 12hr charge
• Case: Flashing🟢=Charging | Solid🟢=Full
• Device: Blue=Charging | Black=Done

5.Maintenance

• Daily: Clean sound port
• Monthly: Deep charge

6.21-Day Adaptation

1️⃣ Week 1: 30min/day → Build tolerance
2️⃣ Week 2: Practice with lyrics/TV
3️⃣ Week 3: Full-day use → Restaurants/cinema

💡 Whistle Fix
Mismatched earplugs → Feedback loop → Test sizes until snug fit

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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. 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)

5. Power Management

• 🟢 On: Activate after full insertion to prevent feedback

• 🔴 Off: Switch to OFF position when not in use

6. Volume Control

• 🔼 Slide upward for louder sound
• 🔽 Slide downward to reduce volume

7. Charging Guide

7-1 Charging Case

• 🟢💡 Flashing green: Charging
• 🟢🔋 Solid green: Fully charged

7-2 Device Indicators

• 🔵 Always on: Charging
• ⚫ No light: Charge complete

7-3 Charging Protocol

1. Use included adapter/USB cable
2. Power off before charging
3. Initial Charge: 10-12 hours required
4. Long Storage: 12-hour recharge
5. Charge when volume drops
6. Unplug immediately after completion

8. Cleaning

• Regularly clean earplugs and sound outlet as illustrated.

9. 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