1. Introduction
Welcome to the Sansui T19 Open-Ear Bluetooth Headphones user manual. The Sansui T19 combines 80 years of audio expertise with modern technology to deliver an exceptional listening experience. These headphones feature an innovative open-ear design for comfort and situational awareness, advanced spatial audio with head tracking, and robust IPX6 waterproofing. This manual provides detailed instructions to help you get the most out of your T19 headphones.

2. Product Overview
The Sansui T19 headphones are designed for versatility and high-fidelity audio. Key features include:
- Head Tracking Spatial Audio: Experience immersive 3D audio with 6-axis sensors for accurate head movement tracking.
- Bluetooth 5.4: Ensures faster, more stable, and seamless wireless connectivity with ultra-low latency.
- 14.2mm Dynamic Driver: Delivers deep bass and clear stereo sound for a rich audio experience.
- DT9.0 Directional Acoustic: Minimizes sound leakage and enhances clarity for music and calls.
- ENC Call Noise Cancellation: Dual beam-forming technology filters out environmental noise for crystal clear calls.
- Dual Connection: Connect to two devices simultaneously (e.g., phone and computer) for easy switching.
- Ultra-Comfortable Open-Ear Fit: Cloud-sensitive silicone and flexible titanium ear hooks provide a secure and comfortable fit for extended wear.
- IPX6 Waterproof: Protected against sweat, raindrops, and direct flushing, ideal for sports and daily use.
- Long Playtime: Up to 7 hours on a single charge, extended to 30 hours with the charging case.
3. Specifications
| Feature | Specification |
|---|---|
| Headphone Model | T19 |
| Brand Name | SANSUI |
| Wearing Type | Open Ear (OWS ear hook headphones) |
| Material | ABS, Plastic |
| Bluetooth Version | 5.4 |
| Transmission Distance | 10m-20m (about 10 Meters) |
| Waterproof Level | IPX6 |
| Sound Producing Unit | 14.2mm Dynamic Coil (Driver Diameter: 14.2mm) |
| Battery Capacity | 400 mAh |
| Battery Life (Earbuds) | Up to 7 hours |
| Total Playtime (with Charging Case) | Up to 30 hours |
| Charging Method | Charging case (Type-C) |
| Audio Codecs | AAC, SBC |
| Frequency Response Range | 20 - 20000 Hz |
| Sensitivity | 120 dB |
| Impedance Range | Up to 32 Ω |
| Active Noise-Cancellation | No |
| With Microphone | Yes (ENC Call Noise Cancellation) |
| Control Button | Yes (Touch Controls) |
| Volume Control | Yes |
| Compatibility | Android/iOS/Windows |
| Package List | User Manual, Charging case, Charging Cable |

4. Setup
4.1 Charging the Headphones and Case
Before first use, fully charge your Sansui T19 headphones and charging case. The charging case features a digital display to indicate battery levels. Use the provided Type-C charging cable.
- Place the earbuds into the charging case.
- Connect the Type-C charging cable to the charging port on the case and to a power source.
- The digital display on the case will show the charging status.
- A full charge provides up to 7 hours of playtime for the earbuds, and the case extends total playtime to 30 hours.
4.2 Bluetooth Pairing
The Sansui T19 uses Bluetooth 5.4 for fast and stable connections.
- Ensure the earbuds are charged and in the charging case.
- Open the charging case. The earbuds will automatically enter pairing mode (indicated by a flashing light on the earbuds).
- On your device (smartphone, tablet, computer), go to Bluetooth settings and search for available devices.
- Select "SANSUI T19" from the list to connect.
- Once connected, a voice prompt will confirm successful pairing.
4.3 Dual Connection
The T19 supports simultaneous connection to two devices.
- Pair the headphones with your first device (e.g., smartphone) as described above.
- Turn off Bluetooth on the first device. The headphones will re-enter pairing mode.
- Pair the headphones with your second device (e.g., laptop).
- Turn on Bluetooth on your first device. The headphones should automatically connect to both devices.
- You can now seamlessly switch between audio sources from both connected devices.

5. Operating Instructions
5.1 Touch Controls
The Sansui T19 features intuitive touch controls on each earbud:

- Single Click:
- Volume + (Right earbud)
- Volume - (Left earbud)
- Double Click:
- Play/Pause (Left/Right earbud)
- Answer/Hang Up Call (Left/Right earbud)
- Triple Click:
- Previous Song (Left earbud)
- Next Song (Right earbud)
- Quadruple Click:
- Game/Music Mode (Right earbud)
- Dual Connection (Left earbud)
- Long-press for 2 seconds:
- Spatial Audio (Right earbud)
- Voice Assistant (Left earbud)
- Decline Call (Left/Right earbud)
5.2 Spatial Audio with Head Tracking
The T19 features real-time spatial acoustic technology with built-in 6-axis sensors for immersive 3D audio.
- To enable Spatial Audio, long-press the Right earbud for 2 seconds.
- The 6-axis sensors track your head movements, allowing you to experience sound that remains fixed in space relative to your device, creating a lifelike cinematic audio experience.

5.3 DT9.0 Directional Acoustic
This technology creates a focused sound area, minimizing sound leakage and ensuring up to 99% clarity during music playback and calls, even in noisy environments.

5.4 ENC Call Noise Cancellation
The T19 utilizes dual beam-forming ENC noise cancellation to ensure your voice is heard clearly during calls.
- The technology forms an adaptive beam to accurately calculate the orientation of your voice.
- It filters out surrounding noise, making your calls effortless even in bustling streets.

6. Maintenance
6.1 Cleaning and Care
The Sansui T19 headphones are IPX6 waterproof, making them easy to clean.
- You can rinse the earbuds directly under water (e.g., in a bath or shower) to clean them.
- The nano-coated hydrophobic structure protects against splash damage from sweat and rain.
- Ensure the earbuds are completely dry before placing them back in the charging case to prevent damage.
- Wipe the charging case with a soft, dry cloth. Do not submerge the charging case in water.

6.2 Storage
When not in use, store the headphones in their charging case to protect them and keep them charged.
7. Troubleshooting
7.1 Common Issues and Solutions
- No Power/Not Charging:
- Ensure the charging cable is securely connected to both the case and the power source.
- Check if the charging case itself has power.
- Make sure the earbuds are correctly seated in the charging case.
- Cannot Pair with Device:
- Ensure Bluetooth is enabled on your device.
- Make sure the earbuds are in pairing mode (flashing indicator light).
- Move the earbuds closer to your device.
- Try turning off and on your device's Bluetooth, or restart your device.
- If previously paired, try forgetting the device in your Bluetooth settings and re-pairing.
- Sound Quality Issues/Intermittent Connection:
- Ensure there are no obstructions between the headphones and your device.
- Move away from sources of strong electromagnetic interference (e.g., Wi-Fi routers, microwaves).
- Check the battery level of the headphones and charge if low.
- Voice Prompts in an Unexpected Language:
- Some users have reported voice prompts in Chinese. Please check the official Sansui website or contact customer support for potential firmware updates or instructions on how to change the voice prompt language, if available.
8. User Tips
- Enhanced Awareness: The open-ear design allows you to stay aware of your surroundings. This is particularly useful for outdoor activities like running or cycling, and for office environments where you need to hear announcements or colleagues.
- Secure Fit for Sports: The flexible titanium ear hooks ensure a stable and comfortable fit, making these headphones ideal for workouts and sports without worrying about them falling out.
- Maximize Battery Life: Always store your headphones in the charging case when not in use to ensure they are ready for your next listening session.
- Spatial Audio Experience: For the best spatial audio experience, ensure you are in a relatively quiet environment and experiment with different audio content that supports 3D sound.
9. Warranty & Support
For warranty information, technical support, or any product-related inquiries, please refer to the official Sansui website or contact the seller directly. Keep your proof of purchase for warranty claims.





