Rythflo WH04
Rythflo WH04 Active Noise Cancelling Headphones User Manual
Model: WH04 | Brand: Rythflo
Introduction
This user manual provides comprehensive instructions for the Rythflo WH04 Active Noise Cancelling Headphones. Please read this manual carefully before using the product to ensure proper operation and to maximize your listening experience. Keep this manual for future reference.

Image: Rythflo WH04 Active Noise Cancelling Headphones, showcasing the neckband design and in-ear earbuds.
What's in the Box
Verify that all items are present in the package:
- Rythflo WH04 Active Noise Cancelling Headphones x1
- USB Type-C Charging Cable x1
- Pairs of Black Eartips (XS, S, M, L) x4
- Pairs of Gray Eartips (XS, S, M, L) x4
- User Manual x1

Image: All components included in the Rythflo WH04 package, including the headphones, charging cable, multiple eartip sizes, and user manual.
Product Features
- Active Noise Cancellation (ANC): Reduces external noise by up to 32 dB for an immersive audio experience.
- Environmental Noise Cancellation (ENC) with 3 AI Mics: Ensures clear voice pickup for calls and online communication.
- Dynamic 13mm Drivers: Delivers balanced audio with rich bass, clear midrange, and crisp highs.
- Bluetooth V5.3 Connectivity: Provides stable and efficient wireless connection up to 10 meters.
- Long Battery Life: Up to 60 hours of playtime with ANC off, and 40 hours with ANC on.
- IPX6 Water Resistance: Protects against splashes and sweat, suitable for various environments.
- Magnetic Earbuds: Features auto ON/OFF functionality when earbuds are separated or attached.
- Comfort-Fit Design: Includes 4 sizes of replaceable eartips (XS, S, M, L) for optimal comfort and hygiene.
- Multipoint Connection: Allows simultaneous connection to two devices.

Image: Visual representation of key features such as Active Noise Cancellation (up to 32dB), 13mm dynamic drivers, up to 60 hours battery life, voice assistant support, and Bluetooth V5.3.

Image: Illustration of clear call quality enabled by three AI-powered microphones with Environmental Noise Cancellation, showing reduced noise and enhanced voice.

Image: Depiction of IPX6 water resistance, indicating the headphones can withstand splashes and sweat during intense activities.
Setup
Charging the Headphones
Before first use, fully charge the headphones. A full charge takes approximately 1.5 hours.
- Connect the USB Type-C charging cable to the charging port on the headphones.
- Connect the other end of the cable to a compatible USB power source (e.g., computer USB port, wall adapter).
- The LED indicator will show charging status (refer to the "Controls and Indicators" section for details).
Bluetooth Pairing
To pair your Rythflo WH04 headphones with a device:
- Power On: Separate the magnetic earbuds to automatically power on the headphones. The LED indicator will flash, indicating pairing mode.
- Activate Bluetooth: On your device (smartphone, tablet, computer), enable Bluetooth.
- Select Device: In your device's Bluetooth settings, search for "RY-WH04" in the list of available devices and select it to connect.
- Confirmation: Once connected, the LED indicator will change, and you may hear an audible confirmation.

Image: Diagram illustrating the auto ON/OFF function of the magnetic earbuds: separating them turns the headphones on, attaching them turns them off.
Multipoint Connection
The WH04 headphones support connecting to two devices simultaneously:
- Pair the RY-WH04 with the first device as described above.
- Turn off the Bluetooth on the first device.
- Connect RY-WH04 to the second device.
- Re-enable the Bluetooth on the first device. The headphones will automatically connect to both devices.

Image: Visual guide for setting up multipoint connection, showing the headphones connected to both a laptop and a smartphone.
Operating Instructions
Controls and Indicators
The control panel is located on the neckband. Familiarize yourself with the buttons and LED indicator:
| Button/Indicator | Function |
|---|---|
| ANC Button |
|
| Multi-Function Button (MFB) |
|
| Volume Up (+) Button |
|
| Volume Down (-) Button |
|
| LED Indicator |
|
| Type-C Charging Port |
|

Image: Detailed diagram of the control panel on the neckband, showing the ANC button, Multi-Function Button (MFB), Volume Up/Down buttons, LED indicator, and Type-C charging port with their respective functions.
ANC Modes
The Rythflo WH04 headphones offer three distinct audio modes:
- Active Noise Cancellation (ANC) Mode: Maximizes noise reduction, ideal for noisy environments like airplanes or busy offices.
- Transparency Mode: Allows you to hear your surroundings while still enjoying your audio, useful for awareness in urban environments or conversations.
- Normal Mode: Standard audio playback without active noise cancellation or transparency features.
Press the ANC button to cycle through these modes.

Image: A person reading outdoors, illustrating the "Enhanced Awareness" provided by Transparency Mode, which filters background noise while allowing environmental sounds.

Image: A person on an airplane, demonstrating the "Noise Off Melody On" experience with ANC Mode, ideal for uninterrupted focus during travel.
Maintenance
- Cleaning: Regularly wipe the headphones and eartips with a soft, dry cloth. For eartips, you may use a slightly damp cloth with mild soap, then dry thoroughly before reattaching.
- Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Eartip Replacement: Replace eartips periodically for optimal hygiene and sound quality. Use the provided spare eartips.
- Water Exposure: While IPX6 water-resistant, avoid submerging the headphones in water. If exposed to sweat or splashes, wipe them dry immediately.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Headphones do not power on. |
|
| Cannot pair with device. |
|
| No sound or low volume. |
|
| Poor call quality. |
|
| ANC not effective. |
|
Specifications
| Feature | Detail |
|---|---|
| Model | WH04 |
| Connectivity | Bluetooth V5.3 |
| Wireless Range | Up to 10 meters (33 feet) |
| Noise Control | Active Noise Cancellation (ANC) |
| Microphones | 3 AI Mics with Environmental Noise Cancellation (ENC) |
| Driver Size | 13mm Dynamic Drivers |
| Battery Life (ANC Off) | Up to 60 hours |
| Battery Life (ANC On) | Up to 40 hours |
| Charging Time | Approx. 1.5 hours |
| Water Resistance | IPX6 (Sweat & Water-Resistant) |
| Control Type | Button Control |
| Included Eartips | XS, S, M, L (Black & Gray) |

Image: Illustration of various durability tests performed on the Rythflo WH04 headphones, including charging port plug-in/out, wire flexibility, temperature, high temperature/humidity, button press, and tension trials, ensuring long-lasting performance.
Warranty and Support
The Rythflo WH04 Active Noise Cancelling Headphones come with a 1-year warranty from the date of purchase.
For technical support, warranty claims, or any inquiries regarding your product, please contact Rythflo customer service:
- Online Support: Go to your order details page on Amazon, click on the WH04 ANC Earbuds detail page, then select "Sold by Rythflo Store" and choose "Ask a Question".
Please retain your proof of purchase for warranty validation.
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