Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Wentronic Y04 Bluetooth Active Noise Cancelling Headphones. Please read this manual thoroughly before using the product to ensure proper function and longevity.

Image: The Wentronic Y04 headphones displayed in multiple color options, highlighting the brand and model.
Package Contents
Verify that all items are present in the package:
- Wentronic Y04 Bluetooth Headphones
- USB-C Charging Cable
- 3.5mm Audio Cable
- User Manual (this document)

Image: A visual representation of the items included in the Wentronic Y04 headphone package, including the headphones, cables, and manual.
Headphone Components
Familiarize yourself with the various parts and controls of your Y04 headphones:

Image: A silver Wentronic Y04 headphone, showcasing its overall design and the location of buttons and ports on the earcups.
- Power Button: Used to turn the headphones on or off.
- Volume Up/Next Track Button: Press briefly to increase volume, press and hold to skip to the next track.
- Volume Down/Previous Track Button: Press briefly to decrease volume, press and hold to go to the previous track.
- Multi-function Button (MFB): Play/pause music, answer/end calls.
- ANC Button: Activates or deactivates Active Noise Cancellation.
- USB-C Charging Port: For charging the headphones.
- 3.5mm Audio Jack: For wired connection.
- Microphone: For voice calls.

Image: A close-up of the headphone headband, illustrating its multi-level adjustment mechanism for a customized fit.

Image: A detailed view of the headphone's earpads, emphasizing their soft, skin-friendly material designed for comfort.
Setup
Charging the Headphones
- Connect the provided USB-C charging cable to the charging port on the headphones.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will show charging status (e.g., red for charging, blue for fully charged).
- A full charge typically takes approximately 2-3 hours.
Powering On/Off
- To Power On: Press and hold the Power button for 3 seconds until the LED indicator flashes blue.
- To Power Off: Press and hold the Power button for 3 seconds until the LED indicator turns off.
Bluetooth Pairing
The Y04 headphones utilize Bluetooth 5.3 for stable and efficient wireless connectivity.

Image: Wentronic Y04 headphones placed next to a laptop, symbolizing their wide compatibility with various devices via Bluetooth 5.3.
- Ensure the headphones are powered off.
- Press and hold the Power button for approximately 5-7 seconds until the LED indicator flashes red and blue alternately. This indicates pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Y04" from the list of found devices.
- Once connected, the LED indicator on the headphones will flash blue slowly, and you will hear an audible confirmation.
- The headphones will automatically attempt to reconnect to the last paired device when powered on.
Operating Your Headphones
Music Playback Controls
| Action | Button Press |
|---|---|
| Play/Pause | Short press MFB |
| Volume Up | Short press Volume Up button |
| Volume Down | Short press Volume Down button |
| Next Track | Long press Volume Up button |
| Previous Track | Long press Volume Down button |
Active Noise Cancellation (ANC)
The Y04 headphones feature Active Noise Cancellation technology to reduce ambient noise.

Image: A close-up of the headphone earcup, highlighting the dedicated button for activating Active Noise Cancellation, indicated by a blue glow.
- To Activate ANC: Press the ANC button once. The ANC indicator light will illuminate.
- To Deactivate ANC: Press the ANC button once again. The ANC indicator light will turn off.

Image: A person wearing the Wentronic Y04 headphones, illustrating the immersive experience provided by Active Noise Cancellation.
Making and Receiving Calls

Image: A person wearing the Wentronic Y04 headphones, suggesting their use for crystal clear calls.
- Answer Call: Short press the MFB.
- End Call: Short press the MFB during a call.
- Reject Call: Long press the MFB when an incoming call rings.
- Redial Last Number: Double-press the MFB.
Wired Mode
Use the included 3.5mm audio cable for a wired connection, especially when the battery is low or for devices without Bluetooth.
- Plug one end of the 3.5mm audio cable into the headphone's audio jack.
- Plug the other end into your audio source's 3.5mm port.
- In wired mode, Bluetooth and ANC functions may be limited or unavailable depending on battery level.
Maintenance
Cleaning
- Wipe the headphones with a soft, dry cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Keep the charging port and audio jack free of dust and debris.
Storage

Image: The Wentronic Y04 headphones folded compactly, demonstrating their space-saving design for travel and storage.
- Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- The foldable design allows for compact storage and portability.
Battery Care

Image: Wentronic Y04 headphones displayed with a prominent '48 Hrs' text, indicating their extended playtime on a single charge.
- Charge the headphones regularly, even if not used frequently, to maintain battery health.
- Avoid fully discharging the battery for extended periods.
Troubleshooting
If you encounter issues with your headphones, refer to the following table:
| Problem | Possible Solution |
|---|---|
| Headphones do not power on | Ensure the headphones are charged. Connect to a power source and try again. |
| Cannot pair with device | Ensure headphones are in pairing mode (flashing red/blue). Turn off and on Bluetooth on your device. Move closer to the device. |
| No sound | Check volume levels on both headphones and connected device. Ensure headphones are properly paired or the 3.5mm cable is securely connected. |
| ANC not working effectively | Ensure ANC is activated (indicator light on). ANC is most effective for low-frequency, constant noise. |
| Poor call quality | Ensure the microphone is not obstructed. Move to an area with less background noise. Check device's connection stability. |
Product Specifications
| Feature | Specification |
|---|---|
| Model Name | Y04 |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Headphones Jack | 3.5 mm Jack |
| Noise Control | Active Noise Cancellation |
| Form Factor | Over Ear |
| Material | Plastic |
| Special Feature | Foldable, Noise Cancellation |
| Item Weight | 1.34 pounds |
| Manufacturer | Wentronic |
Warranty Information
Wentronic products are designed and manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your purchase or visit the official Wentronic website. Keep your proof of purchase for warranty claims.
Customer Support
If you require further assistance or have questions not covered in this manual, please contact Wentronic customer support through the retailer where you purchased the product or visit the official Wentronic website for contact information.