1. Introduction
The Siindoo JH-919 Wireless Bluetooth Headphones are designed to provide a high-fidelity audio experience with the convenience of both wireless Bluetooth 5.1 and wired 3.5mm AUX connections. Featuring a foldable design, comfortable ear cushions, and a long-lasting battery, these headphones are suitable for various uses, including internet bars, monitoring, video games, mobile phones, HiFi audio, and sports. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and enjoyment of your headphones.
Figure 1: Siindoo JH-919 Wireless Bluetooth Headphones
2. Package Contents
Please check the box for the following items:
- 1 x Siindoo JH-919 Headset
- 1 x 0.5m Type-C Charging Cable
- 1 x 1.2m AUX Cable
- 1 x User Manual
Figure 2: Included accessories with the Siindoo JH-919 headphones.
3. Product Overview
Familiarize yourself with the various parts and controls of your Siindoo JH-919 headphones.
Figure 3: Headphone Components Overview
Key components include:
- Headband: Made of soft, skin-friendly material (PU leather). Features a retractable design with stainless steel for adjustable fit.
- Earmuffs: High-quality soft material (PU leather) for comfort and passive noise isolation.
- Control Buttons: Located on the earcup, these include volume up/down, multi-function key (play/pause, track control, call handling), and power button.
- Ports: 3.5mm headphone jack for wired connection and Type-C charging port.
- Microphone: Built-in HD microphone for calls and voice assistant.
Video 1: Unboxing and Feature Demonstration of Siindoo JH-919 Headphones. This video demonstrates the physical features, accessories, and basic operation like powering on and Bluetooth pairing.
4. Setup Instructions
4.1 Charging the Headphones
Before first use, fully charge your headphones.
- Connect the supplied Type-C charging cable to the charging port on the headphone.
- Connect the other end of the cable to a USB power source (e.g., computer USB port, wall adapter).
- The LED indicator will show charging status (specific color/behavior not detailed, assume standard red for charging, blue/off for full).
- A full charge takes approximately 2 to 2.5 hours.
4.2 Powering On/Off
- To Power On: Long press the power button (labeled O/EQ) until the LED light flashes.
- To Power Off: Long press the power button again until the LED light turns off.
4.3 Bluetooth Pairing
To connect your headphones wirelessly to a device:
- Ensure the headphones are fully charged and powered off.
- Long press the power button to turn on the headphones. The LED light will flash, indicating they are in pairing mode.
- On your device (smartphone, laptop, PC, TV), enable Bluetooth and search for available devices.
- Select "siindoo-H11" (or similar, e.g., "Siindoo JH-919") from the list of found devices.
- Once connected, the LED light may change color or stop flashing.
Figure 4: Bluetooth Pairing Example
4.4 Wired Connection
For a wired connection, use the provided 3.5mm AUX cable.
- Plug one end of the 3.5mm AUX cable into the headphone's 3.5mm jack.
- Plug the other end into the audio output jack of your device.
- The headphones will automatically switch to wired mode.
5. Operating Instructions
5.1 Basic Controls
The headphones feature intuitive controls on the earcup:
- Volume Up (+): Press to increase volume.
- Volume Down (-): Press to decrease volume.
- Multi-function Key (Play/Pause/Call):
- Press once to Play/Pause music.
- Press once to Answer/End a call.
- Long press to Reject a call.
- Double press for Next Track.
- Triple press for Previous Track.
- Power Button (O/EQ): Long press for Power On/Off. Short press may cycle through EQ modes (if available).
5.2 Voice Assistant
The Siindoo JH-919 headphones support voice assistants.
- To activate your device's voice assistant (e.g., Amazon Alexa, Apple Siri, Google Assistant), refer to your device's instructions for activating the voice assistant via connected Bluetooth headphones.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the headphones. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the headphones in a cool, dry place. The foldable design allows for compact storage.
- Battery Care: To prolong battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not used for extended periods.
- Avoid Moisture: Keep the headphones away from water and excessive moisture.
7. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Headphones won't turn on. | Ensure the headphones are charged. Connect to a power source using the Type-C cable. |
| Cannot pair via Bluetooth. |
|
| No sound or low volume. |
|
| Voice assistant not responding. | Ensure your device's voice assistant is enabled and configured to work with Bluetooth headphones. |
| Noise cancellation is not strong. | The JH-919 headphones feature passive noise isolation through their closed earmuffs. They do not have Active Noise Cancellation (ANC). Ensure earmuffs fit snugly for best passive isolation. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand Name | siindoo |
| Model | JH-919 |
| Communication | Wireless+Wired |
| Wireless Type | Bluetooth |
| Bluetooth Version | 5.1 |
| Bluetooth Chipset | JIELI6956A |
| Maximum Wireless Range | <10m |
| Driver Diameter | 39.7mm |
| Number Of Drivers | 2 |
| Impedance Range | up to 32 Ω |
| Resistance | 32 Ω |
| Frequency Response Range | 20 - 20000Hz |
| Sensitivity | 112dB |
| Max Output | 45mW |
| Total Harmonic Distortion | 5% |
| Battery Capacity | 400mAh |
| Music Play Time | 28 hours |
| Talk Time | 27 hours |
| Standby Time | 266 hours |
| Charging Time | <2.5 hours |
| Charging Method | Cable (Type-C) |
| Connectors | 3.5 MM |
| With Microphone | Yes |
| Voice Assistant Built-in | Yes (Amazon Alexa Support, Apple Siri Support, Google Assistant Support) |
| Active Noise-Cancellation | No (Features passive noise isolation) |
| Sound Isolating | Yes (Passive) |
| Control Button | Yes |
| Volume Control | Yes |
| Vocalism Principle | Dynamic |
| Codecs | AAC |
| Material | Metal, Plastic, Leather, Silica Gel |
| Headphone Pads Material | Memory Foam |
| Magnet Type | Neodymium |
| Line Length | 1.2m (AUX cable) |
| Plug Type | Line Type |
| Style | Over-ear headphones (Note: Source data incorrectly lists "Wired in-ear headphones") |
| Certification | CE, FCC, RoHS, WEEE |
| Origin | Mainland China |
Note: The "Style" attribute from source data indicates "Wired in-ear headphones", but the product images and description clearly show over-ear headphones. Please refer to the product images for visual confirmation of the over-ear design.
9. User Tips
- TV Connection: The headphones can be connected to a TV via Bluetooth if your TV supports it, or using the 3.5mm AUX cable for a wired connection.
- Comfortable Fit: The retractable headband and soft earmuffs are designed for comfort. Adjust the headband to fit your head shape for optimal sound and comfort during long listening sessions.
- Dual Connectivity: Take advantage of both wireless Bluetooth for freedom of movement and wired AUX connection for uninterrupted listening when the battery is low or for devices without Bluetooth.
- Voice Assistant: Utilize the built-in voice assistant support for hands-free control and quick access to information.
10. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.