Introduction
Welcome to the PAXA UF-C8Ultra Smart Bluetooth 5.4 Glasses Earphones. This innovative device combines stylish eyewear with advanced audio technology, offering a seamless and hands-free experience for calls, music, and more. Featuring Bluetooth 5.4 for stable connections, high-resolution audio, AI-enhanced noise-canceling microphones, and photochromic lenses that adapt to light conditions while offering UV400 protection and anti-blue light filtering. This manual provides essential information on setting up, operating, and maintaining your smart glasses.
Key Features
- 360° Immersive Sound: Experience high-resolution audio with an open sound field and directional music transmission.
- Advanced Bluetooth 5.4: Ensures fast, stable connections with zero drops and low latency.
- AI-Enhanced Noise-Canceling Microphones: For crystal-clear calls even in noisy environments.
- Photochromic Lenses: Lenses automatically change color based on UV light intensity, transitioning from clear indoors to tinted outdoors.
- Comprehensive Eye Protection: Offers UV400 protection, blocking 99% of UVA/UVB rays, and anti-blue light filtering for indoor use.
- Comfortable & Lightweight Design: Crafted with feather-light frames, adjustable nose pads, and curved temples for all-day wear.
- Multi-function Touch Controls: Intuitive touch sensors on the temples for managing calls, music, voice assistant, and remote photography.
- Long-lasting Battery Life: Enjoy extended usage time for music and calls.


Setup
1. Charging the Glasses
Before first use, fully charge your PAXA UF-C8Ultra smart glasses.
- Connect the magnetic data cable to the DC magnetic charging port on the glasses.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The charging indicator light will show the charging status. A full charge typically takes about 1.5 hours.
2. Bluetooth Pairing
To connect your smart glasses to a device (e.g., smartphone, tablet):
- Ensure the glasses are charged and powered on.
- Activate Bluetooth on your device.
- Search for available Bluetooth devices. The glasses should appear as "UF-C8Ultra" or similar.
- Select the glasses to pair. Once paired, you will hear an audio confirmation.
The Bluetooth 5.4 technology ensures a stable connection up to 10 meters (33 feet).

Operating Instructions
The PAXA UF-C8Ultra features intuitive touch controls located on the temples of the glasses.

General Touch Controls:
- Power On: Long press the left/right touch area for 3 seconds.
- Power Off: Long press the left/right touch area for 5 seconds.
- Pause/Play Music: Double-click the left/right touch area.
- Voice Assistant: Touch the left touch area three times to wake up or turn off the voice assistant.
- Answer/Hang Up Call: Double-click the left/right touch area.
- Reject Call: Long press 3 seconds on the left/right touch area.
- Remote Photo Taking (after camera is turned on): Touch the right touch area three times.
- Previous Song: Single left touch area.
- Next Song: Single right touch area.
- Volume Increase: Long press 1.5 seconds on the left touch area.
- Volume Decrease: Long press 1.5 seconds on the right touch area.
Lens Functionality:
The UF-C8Ultra features intelligent photochromic lenses that adapt to your environment.
- Indoors: Lenses remain clear, providing anti-blue light protection for screen use.
- Outdoors: Lenses automatically darken when exposed to UV light, offering UV400 protection and reducing glare. The stronger the UV rays, the darker the lens color.



Maintenance
- Cleaning Lenses: Use a soft, clean microfiber cloth specifically designed for eyewear. For stubborn smudges, use a lens cleaning spray. Avoid using abrasive materials or harsh chemicals.
- Cleaning Frame: Wipe the frame with a soft, damp cloth. Do not submerge the glasses in water.
- Storage: When not in use, store the glasses in their protective case to prevent scratches and damage.
- Avoid Extreme Conditions: Do not expose the glasses to extreme temperatures (hot or cold) or high humidity, as this can affect battery life and electronic components.
Troubleshooting
- No Power: Ensure the glasses are fully charged. If the issue persists, try a different charging cable or power source.
- Cannot Pair Bluetooth:
- Ensure Bluetooth is enabled on your device and the glasses are in pairing mode.
- Make sure the glasses are within the 10m transmission distance of your device.
- Forget the device from your phone's Bluetooth settings and try pairing again.
- Restart both your device and the smart glasses.
- No Sound/Low Sound:
- Check the volume level on both the glasses (long press left/right touch area) and your connected device.
- Ensure the glasses are properly connected via Bluetooth.
- Lenses Not Changing Color: Ensure the glasses are exposed to sufficient UV light. Photochromic lenses react to UV, not just visible light. Performance may vary in different lighting conditions or through car windshields that block UV.
Specifications
| Feature | Detail |
|---|---|
| Model Number | UF-C8Ultra |
| Brand Name | PAXA |
| Bluetooth Version | V5.4 |
| Connection Type | Bluetooth-Compatible |
| Transmission Distance | 10m |
| Battery Capacity (per temple) | 55mAh |
| Usage Time | About 7 hours |
| Charging Time | About 1.5 hours |
| Charging Port | DC magnetic port |
| Frame Replace Available | Yes |
| Functions | Music, Calling, Voice Assistant, Remote Photography |
| Certification | FCC |
| Origin | Mainland China |
| Lens Features | Photochromic, UV400 Protection (blocks 99% UVA/UVB), Anti-Blue Light, HD Transparent |
| Microphone | AI-Enhanced Noise-Canceling |


User Tips
- For optimal audio clarity during calls, ensure the AI-enhanced noise-canceling microphones are not obstructed.
- The photochromic lenses are excellent for transitioning between indoor and outdoor environments without needing to swap glasses. They are particularly useful for driving, as they reduce glare and adapt to changing light conditions.
- The secure and lightweight design makes these glasses a great alternative to traditional earbuds during physical activities, as they are less likely to fall out.
- Utilize the voice assistant feature for hands-free control, especially when your hands are occupied.
Package Contents
The PAXA UF-C8Ultra Smart Bluetooth Glasses package includes:
- 1 x PAXA UF-C8Ultra Wireless Smart Glasses
- 1 x Magnetic Data Charging Cable
- 1 x User Manual
- 1 x Packaging Color Box
Warranty and Support
For any questions, technical support, or warranty claims, please refer to the contact information provided by your retailer or the official PAXA support channels. Keep your purchase receipt for warranty validation.