1. Introduction
Thank you for choosing the Kuizil Q38 Wireless Earbuds. These earbuds are designed to provide a superior audio experience with advanced features like Bluetooth 5.3, IP7 waterproofing, and comfortable ergonomic design. Please read this manual carefully before using your earbuds to ensure proper operation and to maximize their lifespan.
2. Package Contents
Please check the package for the following items:
- Kuizil Q38 Wireless Earbuds (L/R)
- Charging Case
- USB-C Charging Cable
- Replaceable Ear Pads Set (S, M, L)
- User Manual (this document)
3. Setup
3.1 First Use & Charging
Before first use, please fully charge the earbuds and the charging case.
- Place the earbuds into the charging case, ensuring they are correctly seated.
- Connect the USB-C charging cable to the charging port on the case and the other end to a USB power adapter (not included).
- The digital display on the charging case will show the battery percentage (0-100) for the case. LED bars for the left and right earbuds will flash while charging and turn off when fully charged.
Figure 1: Dual LED Digital Display showing charging status for the case and individual earbuds.
3.2 Pairing with Your Device
- Power On: Take both earbuds out of the charging case. They will automatically power on and enter pairing mode (you may hear a voice prompt).
- Activate Bluetooth: On your smartphone or other Bluetooth-enabled device, go to the Bluetooth settings and turn Bluetooth on.
- Select Device: Look for 'Q38' in the list of available devices and select it to connect.
- Confirmation: Once connected, you will hear a confirmation tone or voice prompt from the earbuds.
If pairing fails, place the earbuds back into the charging case, close the lid, then open it again and take them out to re-enter pairing mode. Try the pairing process again.
3.3 Wearing the Earbuds
The Q38 earbuds feature an ergonomic design with flexible ear hooks for a secure and comfortable fit, especially during sports activities. Choose the ear tips (S, M, L) that best fit your ear canal for optimal sound quality and comfort.
Figure 2: Ergonomic design with soft ear contours, secure fit, and various TPU ear tip sizes.
4. Operating Instructions
The Q38 earbuds feature touch controls on the outer surface of each earbud.
| Action | Left Earbud (L) | Right Earbud (R) |
|---|---|---|
| Play/Pause Music | Single Tap | Single Tap |
| Answer/Hang Up Call | Single Tap | Single Tap |
| Previous Song | Double Tap | N/A |
| Next Song | N/A | Double Tap |
| Volume Down | Triple Tap | N/A |
| Volume Up | N/A | Triple Tap |
| Reject Call | Long Press (2s) | Long Press (2s) |
| Activate Voice Assistant | Long Press (2s) | Long Press (2s) |
| Power Off | Long Press (5s) | Long Press (5s) |
4.1 Power On/Off
- Power On: Earbuds power on automatically when taken out of the charging case.
- Power Off: Place earbuds back into the charging case, and they will power off automatically. Alternatively, long press either earbud for 5 seconds to manually power off.
4.2 Video Demonstration
Video 1: Product showcase demonstrating charging, 360° HiFi sound, 48-hour battery life, lightweight design, and suitability for sports, study, and entertainment.
5. Maintenance
5.1 Cleaning
- Regularly clean the ear tips and the mesh of the earbuds with a soft, dry, lint-free cloth.
- Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Ensure the charging contacts on both the earbuds and the case are clean and dry.
5.2 Storage
- When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Store in a cool, dry place, away from extreme temperatures and direct sunlight.
5.3 Water Resistance (IP7)
The Q38 earbuds are IP7 waterproof, meaning they are protected against immersion in water up to 1 meter for up to 30 minutes. They are suitable for rainy days, sweatproof during workouts, and splashproof. However, they are not designed for swimming or prolonged submersion.
Figure 3: IP7 Waterproof rating, suitable for various conditions including rain and sweat.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds won't turn on | Low battery | Charge the earbuds and charging case fully. |
| Cannot pair with device | Earbuds not in pairing mode; Bluetooth off on device; interference | Ensure earbuds are out of case and in pairing mode. Turn device Bluetooth off/on. Move closer to device. Reset earbuds. |
| Only one earbud works | Low battery on one earbud; pairing issue | Charge both earbuds. Reset earbuds and re-pair. |
| No sound or poor sound quality | Volume too low; ear tips not sealed; distance; interference | Adjust volume on device and earbuds. Try different ear tip sizes. Reduce distance to device. Avoid strong electromagnetic fields. |
| Earbuds not charging | Poor contact; faulty cable/adapter | Ensure earbuds are properly seated. Clean charging contacts. Try a different USB-C cable and power adapter. |
6.1 Resetting the Earbuds
If you experience persistent pairing or connection issues, you can reset the earbuds:
- Place both earbuds back into the charging case.
- Close the lid of the charging case.
- Wait for a few seconds, then open the lid and take the earbuds out.
- The earbuds will reset and automatically re-enter pairing mode. You can then try pairing them with your device again.
7. Specifications
| Feature | Detail |
|---|---|
| Model | Q38 |
| Brand | Kuizil |
| Bluetooth Version | 5.3 |
| Earbud Battery Capacity | 42mAh (each) |
| Charging Case Battery Capacity | 800mAh |
| Music Playtime (Earbuds) | Up to 8 hours |
| Total Playtime (with Case) | Up to 40-48 hours |
| Charging Method | USB-C, Charging Case |
| Waterproof Rating | IP7 |
| Maximum Wireless Range | 10m-20m |
| Speaker Size | 14.2mm Dynamic Drivers |
| Sensitivity | 98dB |
| Resistance | 16Ω |
| Microphone | Yes (HD Mics) |
| Active Noise-Cancellation | Yes |
| Material | Plastic |
| Earbud Weight | Approx. 8g (each) |
Figure 4: Internal view highlighting 14.2mm dynamic drivers for HiFi stereo sound, HD Mics, Bass, and Bluetooth 5.3 technology.
Figure 5: Battery life breakdown: 8 hours music time per 42mAh earbud, 40 hours additional listening time from the 800mAh charging case, totaling 48 hours.
8. User Tips
- Secure Fit: Utilize the flexible ear hooks and experiment with the different ear tip sizes to find the most secure and comfortable fit. This also enhances sound quality and noise isolation.
- Easy Setup: The earbuds are generally simple to set up. If you encounter any issues, a quick reset (as described in Section 6.1) often resolves them.
- Good Sound for Value: Users often praise the good sound quality, especially considering the price point.
- Computer Connectivity: Yes, these earbuds can be connected wirelessly to a computer via Bluetooth, just like any other Bluetooth audio device.
9. Warranty & Support
For warranty information and support, please refer to the seller's policy or contact the point of purchase. Keep your proof of purchase for any warranty claims. For further assistance, you may also refer to the official user manual PDF available at: User Manual PDF.