1. Product Overview
The Sansui ANC Bluetooth TWS Earbuds W28 are true wireless stereo earphones designed for an immersive audio experience. They feature advanced Active Noise Cancelling (ANC) technology, clear call capabilities with multiple microphones, and smart optical sensing for intuitive control. The earbuds utilize Bluetooth 5.4 for stable and efficient wireless connectivity.
Key Features:
- -52dB Active Noise Cancelling (ANC): Effectively isolates up to 99% of environmental noise for a peaceful listening experience.
- 6-Mic Clear Calls: Built-in microphones with high SNR intelligently separate ambient noise from voices, ensuring crystal clear calls.
- Transparent Mode: Allows you to hear your surroundings without removing the earbuds, enhancing safety during outdoor activities.
- Bluetooth 5.4: Provides faster and more stable transmission speeds, seamless pairing, and ultra-low latency.
- Smart Optical Sensing: Precisely detects wearing state to automatically play or pause audio.
- Long Battery Life: Up to 28 hours of playback (with charging case).
- Waterproof Design: Offers protection against sweat and light splashes.
2. Package Contents
Please check the package for the following items:
- Sansui ANC Bluetooth TWS Earbuds (Left and Right)
- Charging Case
- USB Charging Cable
- User Manual (this document)
- Silicone Eartips (various sizes)
3. Setup and First Use
3.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place the earbuds into the charging case.
- Connect the USB charging cable to the charging port on the case and to a power source.
- The indicator light on the charging case will show red during charging and turn green when fully charged.
- Ensure the earbuds are properly seated in the case for them to charge.
3.2 Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on. Alternatively, press and hold the touch area on both earbuds for 3 seconds.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off. Alternatively, press and hold the touch area on both earbuds for 3 seconds.
3.3 Bluetooth Pairing
The earbuds will automatically enter pairing mode when the charging case is opened for the first time or when disconnected from a device.
- Open the charging case. The earbuds will enter pairing mode, indicated by a blue light flashing on the earbuds.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for available Bluetooth devices and select "SANSUI W28" from the list.
- Once connected, the earbud indicator lights will stop flashing.
3.4 Sansui W28 App Installation
For enhanced control and customization, download the official Sansui W28 app from your device's app store. The app allows you to adjust ANC settings, equalizer (EQ) settings, and customize touch controls.
4. Operating Instructions
4.1 Active Noise Cancelling (ANC) and Transparent Mode
The earbuds offer different listening modes to suit your environment:
- ANC Mode: Reduces external noise by up to -52dB. Ideal for noisy environments like public transport or offices.
- Transparent Mode: Allows ambient sounds to pass through, keeping you aware of your surroundings. Useful for walking in traffic or listening to announcements.
- Normal Mode: Standard audio playback without noise cancellation or transparency.
You can switch between these modes using the touch controls on the earbuds or through the Sansui W28 app.
4.2 Call Functions
The earbuds are equipped with 6 microphones for clear high-definition calls.
- Answer/End Call: Tap the touch area on either earbud once.
- Reject Call: Press and hold the touch area on either earbud for 2 seconds.
4.3 Music Playback
- Play/Pause: Tap the touch area on either earbud once.
- Next Track: Double-tap the touch area on the right earbud.
- Previous Track: Double-tap the touch area on the left earbud.
- Volume Control: Triple-tap the touch area on the right earbud to increase volume, triple-tap the left earbud to decrease volume. (Note: Default controls may vary; customize via app if desired).
4.4 Voice Assistant
Activate your device's voice assistant (Siri, Google Assistant) by pressing and holding the touch area on either earbud for 2 seconds (when not on a call).
4.5 Smart Optical Sensing
The earbuds feature an advanced optical sensor that detects when they are in your ear. This allows for automatic play/pause functionality:
- Remove an earbud to automatically pause audio.
- Place the earbud back in your ear to automatically resume audio.
This feature can be turned on or off within the Sansui W28 app.
5. Maintenance and Care
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Avoid using harsh chemicals or abrasive materials.
- Eartips: Remove and clean the silicone eartips periodically with water and mild soap. Ensure they are completely dry before reattaching.
- Charging Contacts: Keep the charging contacts on both the earbuds and the case clean and dry to ensure proper charging.
- Storage: Store the earbuds in their charging case when not in use to protect them and keep them charged. Avoid extreme temperatures.
- Water Resistance: The earbuds are waterproof, but the charging case is not. Avoid submerging the earbuds in water for extended periods and ensure they are dry before placing them back in the case.
6. Troubleshooting
6.1 Reset to Factory Mode
If you experience persistent connection issues or other malfunctions, you can reset the earbuds to their factory settings:
- Place both earbuds into the charging case.
- With the case open, press and hold the button on the charging case for approximately 10 seconds until the indicator light flashes.
- Close the case, then open it again to re-enter pairing mode.
- Reconnect the earbuds to your device.
6.2 Common Issues and Solutions
- Earbuds not pairing:
- Ensure both earbuds are charged.
- Make sure Bluetooth is enabled on your device.
- Try resetting the earbuds to factory mode (see 6.1).
- Forget "SANSUI W28" from your device's Bluetooth list and try pairing again.
- Only one earbud working:
- Place both earbuds back in the case, close the lid, then open it again.
- Ensure both earbuds are charged.
- Perform a factory reset.
- Poor sound quality:
- Ensure the earbuds are properly seated in your ears with the correct size eartips.
- Clean the earbud mesh and eartips.
- Check the EQ settings in the Sansui W28 app.
- Ensure your device's volume is not too low or too high, causing distortion.
- ANC not effective:
- Ensure the earbuds fit snugly in your ears to create a good seal.
- Check that ANC mode is activated via touch control or the app.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | SANSUI |
| Model | W28 |
| Item Condition | New |
| Material | ABS, Plastic, Silica Gel |
| Battery Capacity (Earbuds) | 400 mAh (Charging Case) |
| Battery life up to | 28 hours (with charging case) |
| Voice assistant built-in | Yes (Apple Siri Support, Google Assistant Support) |
| Maximum wireless range | 10m-20m |
| Sound Isolating | Yes |
| Earcups Type | Sealed |
| Number Of Drivers | 2 |
| Charging Method | Charging case |
| Headphone Pads Material | Silicone |
| Driver Diameter | 13 mm |
| Impedance Range | up to 32 Ω |
| Bluetooth Version | 5.4 |
| Codecs | AAC, sbc |
| With Microphone | Yes (6-Mic HD Calls) |
| Is wireless | Yes |
| Waterproof | Yes |
| Frequency Response Range | 20 - 20000 Hz |
| Sensitivity | 117 dB |
| Active Noise-Cancellation | Yes |
| Volume Control | Yes |
| Control Button | Yes (Touch Control) |
| Vocalism Principle | Dynamic |
| Wireless Type | Bluetooth |
| Communication | True wireless |
| Resistance | 32 Ω |
| Origin | Mainland China |
8. User Tips
- Optimize Sound: For the best audio experience, ensure you select the correct size silicone eartips that provide a snug fit and good seal in your ears. This significantly impacts bass presence and ANC effectiveness.
- Customize Controls: Utilize the Sansui W28 app to personalize touch controls according to your preferences. This can improve usability, especially if default controls (e.g., for volume) are not ideal for you.
- App for EQ: If you desire more pronounced bass or specific sound profiles, use the equalizer settings available in the Sansui W28 app.
- Multipoint Connection: These earbuds support connecting to two devices simultaneously. This allows for seamless switching between, for example, your phone and laptop without re-pairing.
- Volume Levels: The earbuds can be quite loud. Many users find comfortable listening at 50-60% volume. Adjust to your comfort level to protect your hearing.
9. Frequently Asked Questions (FAQ)
Q: Can each earbud be used individually?
A: Yes, as True Wireless Stereo (TWS) earbuds, each earbud can function independently. You can use one earbud while the other is in the charging case.
Q: Are these earbuds compatible with iPhone?
A: Yes, the Sansui ANC Bluetooth TWS Earbuds W28 use standard Bluetooth 5.4 technology and are compatible with any Bluetooth-enabled device, including iPhones, Android phones, tablets, and computers.
10. Warranty and Support
For detailed warranty information and customer support, please refer to the official documentation provided with your product. You can also find a digital version of the user manual (PDF) for further reference:
If you encounter any issues not covered in this manual, please contact Sansui customer support for assistance.