Product Overview
The Siindoo JH-ANC631F Plus are hybrid active noise-cancelling headphones featuring a multi-function magnetic touch LED screen and built-in 1GB MP3 memory. Designed for comfort and high-fidelity audio, these headphones offer a versatile listening experience with advanced noise reduction and smart controls.

Figure 1: Siindoo JH-ANC631F Plus Headphones with LED Touch Screen
Video 1: Unboxing and overview of the Siindoo JH-ANC631F Plus headphones and included accessories.
What's in the Box

Figure 2: Included accessories with your headphones.
- 1 x Siindoo JH-ANC631F Plus Headphone
- 1 x Siindoo LCD Screen (pre-installed or separate)
- 1 x 0.5m Type-C Charging Cable
- 1 x 1.2m AUX Cable
- 1 x Storage Pack (Carrying Case)
- 1 x User Manual (multi-language)
Setup
1. Charging the Headphones
Before first use, fully charge your headphones. Connect the supplied Type-C charging cable to the charging port on the headphones and to a USB power source. The charging indicator will show the charging status.

Figure 3: Location of the Type-C Charging Port and other controls.
- Charging Port: Type-C
- Charging Time: Approximately 2.5 hours
2. Powering On/Off
Locate the Power button on the headphone earcup (refer to Figure 3).
- To Power On: Press and hold the Power button until the LED indicator lights up.
- To Power Off: Press and hold the Power button until the LED indicator turns off.
3. Bluetooth Pairing
Ensure the headphones are powered on and in pairing mode (usually indicated by a flashing LED). On your device (smartphone, tablet, computer), enable Bluetooth and search for 'Siindoo JH-ANC631F Plus' in the list of available devices. Select it to connect.

Figure 4: Bluetooth pairing and app connection steps.
4. App Download and Connection
For enhanced control and features, download the companion app. Scan the QR code provided in the manual or on the headphone screen (refer to Figure 4) to download the 'Joy Audio' app. After installation, open the app and connect it to your headphones via Bluetooth. The app allows you to customize settings, manage music, and more.
5. Wired Connection (AUX Mode)
To use the headphones in wired mode, connect the supplied 1.2m AUX cable to the 3.5mm headphone jack on the earcup (refer to Figure 3) and to your audio source. This mode is useful when the battery is depleted or for devices without Bluetooth.
Operating Instructions
1. Physical Button Controls
The headphones feature several physical buttons for quick access to common functions (refer to Figure 3):
- Volume Up (+): Press to increase volume.
- Power Button: Press and hold to power on/off. Short press for play/pause or answer/end calls.
- Volume Down (-): Press to decrease volume.
- ANC Button: Press to cycle through Active Noise Cancellation (ANC) modes.
2. LED Touch Screen Functions
The magnetic touch screen provides extensive control over your headphones. The screen is removable for maintenance or replacement (refer to Figure 3 for removable screen detail).

Figure 5: LED Full-Color Touch Screen Multiple Practical Functions.
- Music Play: Control previous/next song, play/pause, and view lyrics.
- Volume Adjustment: Adjust volume up/down directly on the screen.
- ANC Mode: Switch between ANC mode, Normal mode, and Transparency mode.
- EQ Adjustment: Choose from 5 different equalizer presets: Normal, Rock, Pop, Classic, Jazz.
- Alarm: Set custom alarms.
- Brightness of Screen: Adjust screen brightness (10 levels available).
- Language Switch: Select from 18 different languages.
- Lock Screen Wallpaper: Customize with 3 beautiful lock screen wallpapers.
- Light: Turn the screen light on or off.
- Date & Time Setting: Set the current date and time.
- Take Photos: When connected to a mobile device via Bluetooth with the camera app open, tap the screen to remotely take photos.
- Give a Like: When playing videos on a connected mobile app, tap the screen to 'like' content.
3. Active Noise Cancellation (ANC)
The advanced ANC technology blocks up to 95% of external noise, reducing ambient sound from 90dB to 15dB. Use the ANC button or the touch screen to activate and switch between ANC, Normal, and Transparency modes.

Figure 6: Active Noise Cancellation performance.
4. MP3 Playback (Built-in 1GB Memory)
The headphones feature 1GB of built-in memory, allowing you to download and play your favorite music directly without needing a connected device. Manage your music files via the companion app or by connecting the headphones to a computer.
5. Dual Device Connection
The headphones support connecting to two Bluetooth devices simultaneously, allowing for seamless switching between audio sources.
Maintenance
1. Cleaning
- Wipe the headphones, especially the earcups and headband, with a soft, dry cloth.
- For stubborn dirt, use a slightly damp cloth with mild soap, then wipe dry immediately.
- Do not use harsh chemicals or abrasive cleaners.
- Ensure the charging port and 3.5mm jack are free of dust and debris.
2. Storage
- When not in use, store the headphones in the provided storage pack (carrying case) to protect them from dust, scratches, and impacts.
- The foldable design allows for compact storage.
3. Battery Care
- Avoid fully discharging the battery frequently.
- Charge the headphones regularly, even if not used for extended periods, to maintain battery health.
- Store in a cool, dry place away from extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones won't power on | Low battery | Charge the headphones fully. |
| Cannot pair via Bluetooth | Headphones not in pairing mode; device Bluetooth off; interference | Ensure headphones are in pairing mode (flashing LED). Turn off and on your device's Bluetooth. Move closer to the device. If pairing is unsuccessful, the wireless icon on the screen will turn red (refer to Figure 4). Try restarting both devices. |
| No sound | Volume too low; incorrect audio source; loose cable (wired mode) | Increase headphone and device volume. Check if the correct audio output is selected on your device. Ensure AUX cable is securely connected. |
| ANC not working effectively | Incorrect ANC mode selected; environmental noise too high | Cycle through ANC modes using the button or touch screen. Note that ANC is most effective for low-frequency, constant noise. |
| Touch screen unresponsive | Temporary software glitch; screen detached | Restart the headphones. Ensure the magnetic screen is properly attached. If issues persist, contact support. |
Specifications
| Feature | Specification |
|---|---|
| Model | JH-ANC631F Plus |
| Bluetooth Version | V5.3 |
| Working Distance | ≥10M |
| Charging Port | Type-C |
| Battery Capacity | 600 mAh (800 mAh in some listings) |
| Charging Time | Approximately 2.5 hours |
| Standby Time | Approximately 70 hours |
| Talk Time | Approximately 30 hours |
| Music Play Time (BT) | Approximately 35 hours |
| Music Play Time (BT+ANC) | Approximately 28 hours (at 70% volume) |
| Dual Device Connection | Supported |
| Speaker Driver Units | Ф40mm |
| Impedance | 32Ω±10% |
| Speaker Sensitivity | 115dB±3dB (108dB in some listings) |
| Frequency Response | 20Hz~20KHz |
| Sound Isolating | Yes |
| Active Noise-Cancellation | Yes |
| With Microphone | Yes |
| Control Button | Yes |
| Volume Control | Yes |
| Headphone Pads Material | Memory Foam |
| Material | Metal, PVC, Plastic, Leather, Silica Gel |
| Certification | CE, FCC, RoHS, WEEE |
User Tips
- Optimize ANC: For the best Active Noise Cancellation experience, ensure the earcups form a good seal around your ears. Adjust the headband for a snug fit.
- Screen Brightness: Adjust the screen brightness via the touch screen settings to conserve battery life or improve visibility in different lighting conditions.
- MP3 Management: Regularly update the music on the 1GB internal memory using the companion app or by connecting to a computer to keep your favorite tracks readily available.
- Dual Mode Usage: Remember you can switch between wireless (Bluetooth) and wired (AUX) modes. The wired mode is useful if the battery runs out or for devices without Bluetooth.
- App Features: Explore all features within the 'Joy Audio' app for full customization of EQ, ANC modes, and other settings.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your proof of purchase for any warranty claims.