Introduction
The SY-T10 Wireless Bluetooth Headphones are designed to provide a high-quality audio experience with advanced features for comfort and versatility. These over-ear headphones incorporate a minimalist aesthetic with robust functionality, including active noise cancellation, a waterproof design, and extended battery life. Equipped with a high-performance Bluetooth V5.3 chip, they ensure stable and low-latency connections for various activities, from commuting to gaming.

Figure 1: SY-T10 Headphones highlighting key features.
Package Contents
Please check the box for the following items:
- SY-T10 Wireless Bluetooth Headphones
- User Manual
- USB Type-C Charging Cable
- 3.5mm Audio Cable
- Blister packaging
- Retail Box

Figure 2: Package contents of the SY-T10 Headphones.
Product Overview
The SY-T10 headphones feature a minimalist design with intuitive controls and multiple connectivity options. The earcups are made from skin-friendly protein leather for comfort, and the headband is adjustable.

Figure 3: Headband and Earcup Features.
Controls and Ports

Figure 4: Intelligent Controls Layout.
- Power/Mode Button (①/M):
- Long Press: Power On/Off
- Short Press: FM/Wireless Switching
- Volume Up/Next Track Button (②/V+):
- Long Press: Volume Up
- Single Click: Next Track
- Play/Pause/Call Button (③/▶▶):
- Short Press: Play/Pause
- Single Click: Answer/End Calls (during incoming calls)
- Long Press: Reject Calls
- Double Click: Redial
- Volume Down/Previous Track Button (④/V-):
- Long Press: Volume Down
- Single Click: Previous Track
- Charging Port: Type-C port for charging.
- AUX Audio Port: 3.5mm jack for wired connection.
- TF Card Slot: For playing music directly from a TF card.
Setup
1. Charging the Headphones
Before first use, fully charge your SY-T10 headphones. Use the provided USB Type-C charging cable.
- Connect the Type-C end of the charging cable to the charging port on the headphones.
- Connect the USB-A end of the charging cable to a compatible USB power source (e.g., computer USB port, wall adapter).
- The charging indicator light will illuminate. Once fully charged, the light may change color or turn off.
- A full charge provides up to 20 hours of working time.
Note: Do not use a charger with a current exceeding 1.5A or a power exceeding 67W for charging.

Figure 5: Battery and Charging Information.
2. Bluetooth Pairing
The SY-T10 headphones use Bluetooth V5.3 for fast and stable wireless connections.
- Power On: Long press the Power/Mode button (①/M) until the indicator light flashes, indicating it's in pairing mode.
- Activate Bluetooth: On your device (smartphone, tablet, computer), enable Bluetooth.
- Search for Devices: In your device's Bluetooth settings, search for available devices.
- Select "SY-T10": From the list of devices, select "SY-T10" to connect.
- Confirmation: Once connected, the indicator light on the headphones will typically stop flashing or show a steady light, and you may hear an audible confirmation.
Subsequent connections will be automatically established upon powering on the headphones if your device's Bluetooth is active and within range.

Figure 6: Bluetooth V5.3 Chip for stable connection.
Operating Instructions
1. Basic Functions
- Power On/Off: Long press the Power/Mode button (①/M).
- Play/Pause: Short press the Play/Pause/Call button (③/▶▶).
- Volume Control: Long press Volume Up (②/V+) or Volume Down (④/V-).
- Next/Previous Track: Single click Next Track (②/V+) or Previous Track (④/V-).
- Answering/Ending Calls: Single click the Play/Pause/Call button (③/▶▶) during an incoming call.
- Rejecting Calls: Long press the Play/Pause/Call button (③/▶▶) during an incoming call.
- Redial: Double click the Play/Pause/Call button (③/▶▶).
2. Wired Mode (AUX Play)
The headphones support a 3.5mm audio cable connection for use with devices that do not have Bluetooth or when the battery is depleted.
- Connect one end of the 3.5mm audio cable to the AUX port on the headphones.
- Connect the other end of the 3.5mm audio cable to the audio output jack of your device.
- The headphones will automatically switch to wired mode.

Figure 7: Wired and Wireless Connectivity.
3. TF Card Playback
Insert a TF card loaded with music into the designated slot on the headphones to play audio directly without a connected device.
4. Active Noise Cancellation (ANC)
The SY-T10 headphones feature active noise cancellation to reduce ambient noise. Refer to the specific button (if any) for ANC activation/deactivation, which is typically integrated with the power/mode button or a dedicated switch.
Video 1: Product Showcase of SY-T10 Headphones.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the headphones. Do not use harsh chemicals or abrasive materials.
- Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Exposure: While waterproof, avoid prolonged submersion or exposure to high-pressure water jets. Ensure ports are dry before charging.
- Battery Care: To prolong battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not in use for extended periods.
Troubleshooting
- Headphones won't turn on: Ensure the headphones are fully charged. Connect them to a power source and try again.
- Cannot pair via Bluetooth:
- Make sure the headphones are in pairing mode (indicator light flashing).
- Ensure Bluetooth is enabled on your device and it's within 10 meters of the headphones.
- Turn off and on Bluetooth on your device, then try searching again.
- If previously paired, try 'forgetting' the device on your phone and re-pairing.
- No sound in wireless mode:
- Check if the headphones are properly connected to your device.
- Adjust the volume on both the headphones and your device.
- Ensure the correct audio output is selected on your device.
- No sound in wired mode:
- Ensure the 3.5mm audio cable is securely plugged into both the headphones and the audio source.
- Test with a different audio cable or device to rule out cable or source issues.
- Poor sound quality:
- Ensure the headphones are within Bluetooth range and there are no obstructions.
- Check the audio source quality.
- Clean the earcups and drivers if necessary.
Specifications

Figure 8: Detailed Product Parameters.
| Feature | Specification |
|---|---|
| Product Model | SY-T10 |
| Brand Name | Sooyn |
| Material | Plastic |
| Wireless Version | Bluetooth 5.3 |
| Communication | Wireless (Bluetooth) |
| Transmission Distance | <10m |
| Frequency Response Range | 20 - 20000Hz |
| Driver Diameter | 40mm |
| Vocalism Principle | Dynamic |
| Number Of Drivers | 2 |
| Impedance Range | up to 32 Ω |
| Sensitivity | 86dB |
| Max Output | 60mW |
| Total Harmonic Distortion | 0% |
| Battery Capacity | 350mAh |
| Working Time (Battery Life) | Up to 20 hours |
| Charging Method | Cable (Type-C) |
| Charging Voltage | 5V |
| Weight (Bare Metal) | 170g |
| Weight (Earphone) | 300g |
| Dimensions (L x W x H) | 210mm x 50mm x 210mm |
| Earcups Type | Sealed |
| Headphone Pads Material | Synthetic leather |
| Waterproof | Yes |
| Active Noise-Cancellation | Yes |
| Sound Isolating | Yes |
| With Microphone | No |
| Support APP | No |
| Support Memory Card | Yes (TF Card) |
| Connectors | Type C, 3.5mm AUX |
| Certification | CE, RoHS |
User Tips
- Comfortable Fit: Adjust the multi-level headband and flexible rotating axis to find the most comfortable fit for extended listening sessions.
- Versatile Use: Take advantage of both wireless Bluetooth and wired AUX modes for seamless audio across different devices and situations.
- Gaming Advantage: The ultra-low latency feature makes these headphones ideal for gaming, ensuring audio and visuals are perfectly synchronized.
- Battery Management: For optimal battery longevity, avoid completely draining the battery before recharging. A quick charge can provide hours of playback.
- Travel Companion: The lightweight design and long battery life make these headphones excellent for travel and daily commutes.
Warranty & Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact the retailer/manufacturer directly. Keep your proof of purchase for any warranty claims.





