1. Introduction
Thank you for choosing the Siindoo JH-820 Wireless Bluetooth Headphones. These headphones are designed to provide a high-fidelity audio experience with crystal clear highs, balanced mids, and powerful bass. Featuring Bluetooth 5.4 for stable connections, 3 EQ sound modes, and a comfortable, foldable design, they are perfect for travel, study, and daily entertainment. This manual will guide you through the setup, operation, and maintenance of your new headphones.
2. What's in the Box
Upon opening your Siindoo JH-820 package, you should find the following items:
- 1 x Siindoo JH-820 Headset
- 1 x 0.3m Type-C Charging Cable
- 1 x 1.2m AUX Cable
- 1 x User Manual
3. Product Overview and Controls
The Siindoo JH-820 headphones feature an ergonomic, lightweight, and compact design with soft, skin-friendly earmuffs and headband for comfortable wear. They are foldable and stretchable for portability and adjustable to fit personal preferences.
Controls:
- EQ Button: Press to switch between 3 EQ modes (POP, Vocal, Bass).
- '+' Button: Press to increase volume. Long press for next song.
- '-' Button: Press to reduce volume. Long press for previous song.
- Power Button: Press and hold to turn the device on/off. Also functions as music play/pause.
Ports and Indicators:
- 3.5mm Jack: For wired audio connection.
- Type-C Charging Port: For charging the headphones.
- Microphone: For hands-free calling.
- Bluetooth Indicator/Charging Indicator: Shows Bluetooth status and charging status.
4. Setup
4.1 Charging the Headphones
- Connect the provided Type-C charging cable to the charging port on the headphones.
- Connect the other end of the cable to a USB power source (e.g., computer, wall adapter).
- The charging indicator light will illuminate during charging.
- A full charge takes approximately 2.5 hours. A quick 5-minute charge provides 2 hours of playtime.
4.2 Powering On/Off
- To Power On: Press and hold the Power button until the indicator light turns on.
- To Power Off: Press and hold the Power button until the indicator light turns off.
4.3 Bluetooth Pairing
The Siindoo JH-820 supports stable dual connections with Bluetooth V5.4, compatible with computers, iOS devices, Android smartphones, tablets, laptops, and MP3/MP4 players.
- Ensure the headphones are powered off.
- Press and hold the Power button for a few seconds until the Bluetooth indicator light starts flashing (usually blue and red, or rapidly blue), indicating pairing mode.
- On your device (smartphone, tablet, computer), go to Bluetooth settings and enable Bluetooth.
- Search for available devices. You should see "siindoo-H11" or a similar name in the list.
- Select "siindoo-H11" to connect. Once connected, the indicator light will typically stop flashing and remain solid blue.
4.4 Wired Connection (AUX Mode)
You can also use the headphones in wired mode, which is useful when the battery is low or for devices without Bluetooth connectivity.
- Connect one end of the provided 3.5mm AUX cable to the 3.5mm jack on the headphones.
- Connect the other end of the AUX cable to the audio output port of your device.
- The headphones will automatically switch to wired mode.
5. Operating Instructions
5.1 Music Playback
- Play/Pause: Press the Power button once.
- Volume Up: Press the '+' button.
- Volume Down: Press the '-' button.
- Next Song: Long press the '+' button.
- Previous Song: Long press the '-' button.
5.2 EQ Sound Modes
The headphones feature 3 EQ modes to optimize your listening experience for different music genres:
- POP Mode: Enhanced for popular music.
- Vocal Mode: Optimized for clear vocals.
- Bass Mode: Boosted bass for a richer low-end.
To switch between EQ modes, press the EQ button.
5.3 Hands-Free Calling
When connected via Bluetooth, you can use the built-in microphone for hands-free calls.
- Answer/End Call: Press the Power button once.
- Reject Call: Long press the Power button.
- Activate Voice Assistant: (If supported by your device) Press the Call/EQ switch button.
6. Maintenance
- Clean the headphones regularly with a soft, dry cloth.
- Avoid exposing the headphones to extreme temperatures, humidity, or direct sunlight.
- Do not use abrasive cleaners or solvents.
- Store the headphones in a cool, dry place when not in use. The foldable design helps save space during storage.
- Avoid dropping or subjecting the headphones to strong impacts.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones won't turn on | Low battery | Charge the headphones fully. |
| Cannot pair via Bluetooth | Headphones not in pairing mode; Bluetooth off on device; device too far | Ensure headphones are in pairing mode (flashing indicator). Turn on Bluetooth on your device. Keep devices within 10 meters. |
| No sound in wireless mode | Not connected; volume too low; incorrect audio output selected | Check Bluetooth connection. Increase headphone and device volume. Ensure Siindoo JH-820 is selected as audio output on your device. |
| No sound in wired mode | AUX cable not fully inserted; cable damaged; device volume too low | Ensure AUX cable is securely connected at both ends. Try a different AUX cable. Increase device volume. |
| Microphone not working | Not connected; microphone muted on device | Ensure Bluetooth is connected. Check device settings to ensure microphone input is set to headphones and not muted. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | JH-820 |
| Bluetooth Version | V5.4 |
| Communication | Wireless+Wired |
| Wireless Range | Up to 10m |
| Battery Capacity | 200 mAh |
| Charging Port | Type-C |
| Charging Time | Approx. 2.5 hours |
| Music Play Time (70% volume) | Approx. 24 hours |
| Battery Life (up to) | 200 hours (standby) |
| Taking Time | Approx. 21 hours |
| Speaker Driver Units | Φ40mm |
| Impedance | 32±2Ω |
| Speaker Sensitivity | 105dB±3dB |
| Frequency Response Range | 20Hz~20KHz |
| Max Output | 45mW |
| Total Harmonic Distortion | 5% |
| Vocalism Principle | Dynamic |
| Number Of Drivers | 2 |
| With Microphone | Yes |
| Volume Control | Yes |
| Control Button | Yes |
| Sound Isolating | Yes |
| Active Noise-Cancellation | No |
| Headphone Pads Material | Memory Foam |
| Magnet Type | Neodymium |
| Material | ABS, Plastic, Leather |
| Certification | CE, FCC, RoHS, WEEE |
9. Warranty and Support
Siindoo is committed to providing high-quality products. For any inquiries or issues during use, please contact the seller or Siindoo customer support. Please refer to your purchase documentation for specific warranty terms and conditions.