1. Introduction
Thank you for choosing the Kuizil C16P Wireless Bluetooth Earbuds. These earbuds are designed to provide a superior audio experience with advanced features such as Bluetooth 5.3 connectivity, IP7 waterproof rating, long battery life, and intuitive touch controls. This manual will guide you through the setup, operation, and maintenance of your new earbuds to ensure optimal performance and longevity.
Safety Information
- Do not disassemble or modify the earbuds or charging case.
- Keep the device away from extreme temperatures, humidity, and corrosive substances.
- Avoid dropping or subjecting the device to strong impacts.
- Clean the earbuds with a soft, dry cloth. Do not use harsh chemicals.
- Dispose of the device and its components responsibly according to local regulations.
2. Package Contents
Please check the package for the following items:
- Kuizil C16P Wireless Bluetooth Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- Replacement Ear Tips (S, M, L sizes)
- User Manual

Image: Contents of the Kuizil C16P Earbuds package, showing the earbuds, charging case, USB-C cable, and various sizes of ear tips.
3. Product Overview
The Kuizil C16P earbuds feature an ergonomic design with ear hooks for secure fit, especially during sports activities. The charging case includes an LED digital display to show battery levels.

Image: The Kuizil C16P Wireless Bluetooth Earbuds shown inside their charging case, which features an LED digital display indicating battery percentage.

Image: A visual representation of the Kuizil C16P earbuds' design, highlighting the soft ear hooks, ergonomic fit, and the inclusion of small, medium, and large replacement ear tips for personalized comfort.
4. Setup
Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place the earbuds into the charging case. Ensure 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) or a computer's USB port.
- The LED display on the charging case will show the battery percentage, and the earbuds' indicators will light up during charging.
- Once fully charged, the display will show 100%, and the earbud indicators will turn off.

Image: The Kuizil C16P charging case with its lid open, displaying an LED screen showing '100' for the case's charge and individual battery level indicators for the left and right earbuds.
Pairing with Your Device
The earbuds support Bluetooth 5.3 for a stable and fast connection.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth.
- Search for "C16" in the list of available Bluetooth devices and select it to connect.
- Once connected, you will hear a confirmation tone, and the earbuds' indicators will stop flashing.
- The earbuds will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.

Image: A smartphone screen displaying the Bluetooth settings, with the 'C16' earbuds listed as an available device, illustrating the one-step pairing process.
Wearing the Earbuds
For optimal sound quality and comfort, choose the correct ear tip size and adjust the ear hooks.
- Select the ear tips (S, M, L) that provide a snug and comfortable fit in your ear canal.
- Place the ear hook over your ear.
- Gently insert the earbud into your ear canal.
- Rotate the earbud slightly to find a comfortable and secure angle.

Image: A step-by-step diagram demonstrating the correct way to wear the Kuizil C16P earbuds, showing how to position the ear hook, insert the earbud, and rotate for a comfortable fit.
5. Operating Instructions
Touch Controls
The Kuizil C16P earbuds feature smart touch controls on each earbud for easy management of music and calls.
| Function | Action |
|---|---|
| Play/Pause | Single tap on either earbud |
| Next Song | Double tap on the Right earbud |
| Previous Song | Double tap on the Left earbud |
| Volume Up | Triple tap on the Right earbud |
| Volume Down | Triple tap on the Left earbud |
| Answer/End Call | Single tap on either earbud |
| Reject Call | Long press (2 seconds) on either earbud |
| Activate Voice Assistant | Long press (2 seconds) on either earbud (when not on a call) |

Image: A detailed diagram illustrating the various touch control functions on the Kuizil C16P earbuds, including play/pause, previous/next song, volume control, answer/reject call, and voice assistant activation.
Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on. Alternatively, long press the touch area on both earbuds for 3 seconds.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off and begin charging. Alternatively, long press the touch area on both earbuds for 5 seconds.
6. Maintenance
Cleaning
Regular cleaning helps maintain sound quality and hygiene.
- Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
- For ear tips, remove them from the earbuds and clean with a damp cloth, then dry thoroughly before reattaching.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
Water Resistance (IP7)
The Kuizil C16P earbuds are IP7 waterproof, meaning they are protected against temporary immersion in water up to 1 meter for 30 minutes. This makes them suitable for sports and protection against sweat and rain.
- Do not intentionally submerge the earbuds in water for extended periods.
- The charging case is not waterproof. Do not expose it to water.
- Ensure the earbuds are dry before placing them back into the charging case to prevent damage.

Image: The Kuizil C16P earbuds covered in water droplets, visually representing their IP7 waterproof and sweatproof capabilities, suitable for use in rainy conditions or during intense workouts.
Storage
When not in use, store the earbuds in their charging case to protect them and keep them charged.
7. Troubleshooting
If you encounter issues with your earbuds, please refer to the following common problems and solutions:
| Problem | Possible Solution |
|---|---|
| Earbuds not pairing | Ensure earbuds are charged. Place them back in the case, close the lid, then open again. Turn off and on Bluetooth on your device. Forget "C16" from your device's Bluetooth list and re-pair. |
| No sound from one earbud | Check battery level of both earbuds. Try placing both earbuds back in the case and taking them out again. Re-pair the earbuds with your device. |
| Earbuds not charging | Ensure the charging cable is securely connected. Check if the charging case has power. Clean the charging contacts on both earbuds and inside the case. |
| Poor sound quality | Ensure earbuds are properly seated in your ears. Try different ear tip sizes. Clean the ear tips and speaker mesh. Move closer to your connected device to avoid interference. |
| Touch controls not responding | Ensure your fingers are clean and dry. Try restarting the earbuds by placing them in the case and taking them out. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | C16P |
| Bluetooth Version | 5.3 |
| Waterproof Rating | IP7 |
| Earbud Playtime (Single Charge) | Up to 8 hours |
| Total Playtime (with Charging Case) | Up to 50 hours |
| Driver Size | 13mm |
| Charging Port | USB-C |
| Noise Cancellation | CVC 8.0 Noise Cancelling (for calls) |
9. Warranty and Support
Kuizil products are designed and manufactured to the highest quality standards. For warranty information or technical support, please refer to the contact details provided on the product packaging or the official Kuizil website. Please retain your proof of purchase for any warranty claims.



