RTUSIA r-black
RTUSIA Bluetooth Headphones User Manual
Model: r-black
1. Introduction
Thank you for choosing RTUSIA Bluetooth Headphones. These wrap-around sports wireless headphones are designed for comfort and crystal-clear sound, featuring a built-in microphone and a long-lasting 12-hour battery life. Their foldable design makes them easy to carry, perfect for active lifestyles.

Figure 1.1: RTUSIA Bluetooth Headphones, showcasing the wrap-around design and control buttons on the earcup.
2. Setup
2.1 What's in the Box
- RTUSIA Bluetooth Headphones
- Charging Cable (USB)
- User Manual (this document)
2.2 Charging the Headphones
Before first use, fully charge your headphones. A full charge provides approximately 12 hours of battery life.
- Locate the USB Charging Port on the headphone earcup.
- Connect the provided USB charging cable to the port and the other end to a USB power source (e.g., computer, wall adapter).
- The LED Indicator will illuminate during charging and change color or turn off when charging is complete.

Figure 2.1: Headphone controls and USB charging port location.
2.3 Bluetooth Pairing
To connect your headphones to a device:
- Ensure the headphones are charged and powered off.
- Press and hold the Multifunctional Button (usually the power button) until the LED Indicator flashes rapidly, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for new devices.
- Select "RTUSIA Headphones" or a similar name from the list of available devices.
- Once connected, the LED Indicator will typically slow its flashing or turn solid blue.

Figure 2.2: Bluetooth compatibility and control layout for pairing.
3. Operating Instructions
3.1 Power On/Off
- Power On: Press and hold the Multifunctional Button for approximately 3 seconds until the LED indicator lights up.
- Power Off: Press and hold the Multifunctional Button for approximately 5 seconds until the LED indicator turns off.
3.2 Music Playback
- Play/Pause: Press the Multifunctional Button once.
- Next Track: Press the "Next Song" button (usually marked with ▶▶).
- Previous Track: Press the "Previous Song" button (usually marked with ◀◀).
- Volume Up: Press the "Volume Up" button (usually marked with +).
- Volume Down: Press the "Volume Down" button (usually marked with -).

Figure 3.1: Detailed view of the control buttons for music and calls.
3.3 Call Management
- Answer/End Call: Press the Multifunctional Button once during an incoming call or active call.
- Reject Call: Press and hold the Multifunctional Button for approximately 2 seconds during an incoming call.
- Redial Last Number: Double-press the Multifunctional Button when not on a call.

Figure 3.2: The headphones feature CVC 6.0 for noise cancellation during calls, ensuring clear communication.
3.4 Wearing the Headphones
These headphones feature a unique wrap-around design that rests outside your ears, providing comfort and stability, especially during physical activity.
- Gently place the earcups over your ears, ensuring the "L" (left) and "R" (right) indicators align with your respective ears.
- The flexible band should wrap comfortably around the back of your head, securing the headphones in place.
- Adjust the earcups for a snug fit that allows ambient sound awareness, ideal for outdoor activities.

Figure 3.3: The headphones are designed for ultra-comfort, resting outside the ear canal.

Figure 3.4: The flexible design allows the headphones to be worn comfortably around the neck when not in use.
Video 3.1: Demonstration of wearing the RTUSIA Bluetooth Headphones and their comfortable fit for various activities.
4. Maintenance
4.1 Cleaning
Regular cleaning helps maintain the performance and longevity of your headphones.
- Wipe the earcups and band with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Avoid getting moisture into any openings.
4.2 Storage
When not in use, store your headphones in a cool, dry place, away from extreme temperatures and direct sunlight. The foldable design allows for compact storage.

Figure 4.1: The headphones can be folded for easy portability and storage.
4.3 Battery Care
- Avoid fully discharging the battery frequently.
- Charge the headphones regularly, even if not used for extended periods, to maintain battery health.
- Do not expose the battery to excessive heat or cold.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones won't turn on. | Low battery. | Charge the headphones fully. |
| Cannot pair with device. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in pairing mode (rapidly flashing LED). Turn device Bluetooth off and on. Move headphones closer to the device (within 10 meters). |
| No sound or low volume. | Volume too low on headphones or device; not properly connected. | Increase volume on both headphones and device. Re-pair the headphones. |
| Poor call quality. | Weak signal; microphone obstructed. | Move closer to your device. Ensure the microphone is not covered. |
6. Specifications
| Feature | Detail |
|---|---|
| Model Name | marathon |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.0 |
| Battery Life | Up to 12 Hours |
| Charging Time | 12 Hours |
| Ear Placement | Over Ear (Wrap Around) |
| Noise Control | Active Noise Cancellation (CVC 6.0 for calls) |
| Item Weight | 0.12 Kilograms (4.2 ounces) |
| Frequency Range | 20Hz - 20,000Hz |
| Control Method | Push Button |
| Compatible Devices | Bluetooth-enabled devices |
7. Warranty and Support
RTUSIA is committed to providing high-quality products. For specific warranty details and support inquiries, please refer to the warranty card included with your purchase or visit the official RTUSIA website. You may also contact your retailer for assistance.
For technical support or questions regarding your RTUSIA Bluetooth Headphones, please contact:
- Manufacturer: RTUSIA
- Online Support: Refer to the product page on Amazon.com or the official RTUSIA website for contact information.
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