1. Introduction
This manual provides detailed instructions for the proper use, setup, and maintenance of your QCY ANC H4 Wireless Headphones. Please read this manual thoroughly before using the product to ensure optimal performance and longevity. Keep this manual for future reference.
2. Safety Information
- Do not expose the headphones to extreme temperatures, humidity, or corrosive environments.
- Avoid dropping or subjecting the headphones to strong impacts.
- Do not disassemble or modify the headphones. This may void the warranty and cause damage.
- Clean the headphones with a soft, dry cloth. Do not use liquid cleaners.
- Listen at moderate volume levels to prevent hearing damage. Prolonged exposure to loud sounds can cause irreversible hearing loss.
3. Package Contents
Please check the package for the following items:
- QCY ANC H4 Wireless Headphones
- USB Charging Cable
- User Manual
4. Product Overview
Familiarize yourself with the components of your QCY ANC H4 headphones:

An image showing the QCY ANC H4 wireless over-ear headphones in white, highlighting the earcups and headband. Key features include the adjustable headband, soft ear cushions, and control buttons located on the earcups.
Key Components:
- Adjustable Headband: For a comfortable fit.
- Earcups: House the audio drivers and controls.
- Control Buttons: Typically include Power, Volume Up/Down, Multi-function, and ANC (Active Noise Cancellation) buttons.
- Charging Port: USB-C port for charging.
- LED Indicator: Displays power, pairing, and charging status.
5. Setup
5.1. Charging the Headphones
- Connect the USB 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 the charging status (e.g., red for charging, blue/off for fully charged).
- A full charge typically takes approximately 2 hours.
5.2. Bluetooth Pairing
- Power On: Press and hold the Power button for approximately 3-5 seconds until the LED indicator flashes blue and red alternately, indicating pairing mode.
- Activate Bluetooth: On your mobile phone or other device, enable Bluetooth.
- Select Device: In the Bluetooth device list, search for "QCY ANC H4" and select it to connect.
- Confirmation: Once connected, the LED indicator will typically flash blue slowly or turn off, and you may hear an audible confirmation.
- If pairing fails, turn off the headphones and your device's Bluetooth, then repeat the steps.
6. Operating Instructions
6.1. Power On/Off
- Power On: Press and hold the Power button for 3 seconds.
- Power Off: Press and hold the Power button for 5 seconds.
6.2. Music Playback
- Play/Pause: Press the Multi-function button once.
- Next Track: Press and hold the Volume Up button for 2 seconds.
- Previous Track: Press and hold the Volume Down button for 2 seconds.
6.3. Call Management
- Answer/End Call: Press the Multi-function button once.
- Reject Call: Press and hold the Multi-function button for 2 seconds.
- Voice Assistant: Triple-press the Multi-function button (if supported by your device).
6.4. Volume Control
- Volume Up: Press the Volume Up button.
- Volume Down: Press the Volume Down button.
6.5. Active Noise Cancellation (ANC)
- Toggle ANC: Press the dedicated ANC button once to cycle through ANC On, Transparency Mode, and ANC Off.
7. Maintenance
- Cleaning: Use a soft, dry, lint-free cloth to clean the headphones. Do not use abrasive cleaners, alcohol, or chemical solvents.
- Storage: When not in use, store the headphones in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Care: To preserve battery life, charge the headphones regularly, even if not used frequently. Avoid fully discharging the battery for extended periods.
8. Troubleshooting
| 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 (LED flashing blue/red). Turn off and on Bluetooth on your device. Clear previous Bluetooth connections on your device. |
| No sound or low volume. | Check volume levels on both headphones and your connected device. Ensure headphones are properly connected. |
| ANC not working effectively. | Ensure ANC is activated. Check that the earcups form a good seal around your ears. |
| Intermittent connection. | Move closer to your connected device. Avoid obstacles between the headphones and the device. Reduce interference from other wireless devices. |
9. Specifications
- Brand: QCY
- Model: ANC H4
- Color: White
- Noise Isolation: Active Noise Cancellation
- Wireless Technology: Bluetooth
- Age Range: Adult
- Specific Uses: Music
- Compatible Devices: Mobile Phone
- Cable Function: Wireless
- Frequency Range: 20 Hz - 20,000 Hz
10. Warranty and Support
QCY products are covered by a limited warranty from the date of purchase. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official QCY website. For technical support, troubleshooting assistance, or service inquiries, please contact QCY customer support through their official channels.
Official QCY Website: www.qcy.com







