1. Introduction
Welcome to the world of TRANSFORMERS audio! The TF-T31 TWS Bluetooth Earphones combine iconic design with advanced audio technology, offering a superior listening and gaming experience. Featuring Bluetooth 5.4, high-resolution audio, and a unique mechanical shell design, these earphones are engineered for performance and style. This manual will guide you through the setup, operation, and maintenance of your new earphones.
2. Package Contents
Please check the box for the following items:
- 2 x TRANSFORMERS TF-T31 Bluetooth Earphones (Left and Right)
- 1 x Charging Case
- 1 x USB Type-C Charging Cable
- 1 x User Manual
3. Product Overview
The TF-T31 earphones feature a distinctive mechanical shell design inspired by TRANSFORMERS. The charging case has a rotating lid for easy access. Inside, high-quality drive units deliver rich, detailed sound.
4. Setup and First Use
4.1. Charging the Earphones and Case
Before first use, fully charge the earphones and the charging case.
- Place both earphones into the charging case.
- Connect the USB Type-C charging cable to the charging port on the case and plug the other end into a USB power source (e.g., wall adapter, computer USB port).
- The indicator lights on the case will show charging status. Once fully charged, the lights will indicate completion or turn off.
The charging case has a battery capacity of 300mAh. Earphones have 30mAh each. A full charge for earphones takes approximately 1.5 hours.
4.2. Pairing with a Bluetooth Device
The TF-T31 earphones support Bluetooth 5.4 for stable and efficient connection.
- Open the charging case. The earphones will automatically enter pairing mode (if not already paired).
- On your device (smartphone, tablet, computer), go to Bluetooth settings and ensure Bluetooth is enabled.
- Search for available devices. You should see "TRANSFORMERS TF-T31" in the list.
- Select "TRANSFORMERS TF-T31" to connect. Once connected, you will hear a confirmation tone, and the indicator lights on the earphones will change.
The earphones are compatible with Windows, iOS, and Android operating systems.
5. Operating Instructions
5.1. Touch Controls
The TF-T31 earphones feature highly sensitive touch controls on each earbud for easy management of calls and music playback.
| Action | Left Earphone | Right Earphone |
|---|---|---|
| Double Click | Pause/Play, Answer/Hang up call | Pause/Play, Answer/Hang up call |
| Triple Strike | Previous track | Next track |
| Long Press (2 seconds) | Reject call, Activate Voice Assistant | Reject call, Switch between Game Mode / Music Mode |
5.2. Dual Mode (Gaming/Music)
The TF-T31 earphones offer a dual-mode feature, allowing you to switch between a low-latency Gaming Mode and a high-fidelity Music Mode. To switch modes, long press the right earphone for 2 seconds.
5.3. Power On/Off
- Power On: Open the charging case, and the earphones will automatically power on.
- Power Off: Place the earphones back into the charging case and close the lid. They will automatically disconnect and power off.
6. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the earphones and charging case. Do not use harsh chemicals or abrasive materials.
- Water Resistance: The earphones are waterproof. However, avoid prolonged exposure to water or submersion. Dry thoroughly if they get wet.
- Storage: When not in use, store the earphones in their charging case to protect them and keep them charged.
- Temperature: Avoid exposing the earphones to extreme temperatures (hot or cold) or direct sunlight for extended periods.
7. Troubleshooting
- Earphones not pairing: Ensure both earphones are charged. Place them back in the case, close the lid, then open it again to re-enter pairing mode. Check your device's Bluetooth settings and try reconnecting.
- Only one earphone working: Try resetting the earphones. Place both back in the case, close the lid, then open it. If the issue persists, try unpairing from your device and re-pairing.
- Low volume or poor sound quality: Check the volume levels on both your device and the earphones. Ensure the earphones are clean and free of debris.
- Charging issues: Verify the USB-C cable is securely connected to both the case and the power source. Try a different cable or power adapter.
- Intermittent connection: Ensure you are within the 10-meter Bluetooth transmission range and there are no significant obstacles between the earphones and your device.
8. Specifications
| Feature | Detail |
|---|---|
| Product Type | TWS Wireless Earphones |
| Model | TF-T31 |
| Brand | TRANSFORMERS |
| Bluetooth Version | V5.4 |
| Speaker Unit / Driver Diameter | 14.8mm |
| Earphone Battery Capacity | 30mAh (each earphone) |
| Charging Case Battery Capacity | 300mAh |
| Usage Time (Earphones) | Approx. 5 hours (single play) |
| Total Battery Life (with case) | Up to 25 hours |
| Charging Time (Earphones) | Approx. 1.5 hours |
| Frequency Response Range | 20Hz - 20000Hz |
| Bluetooth Transmission Distance | Approx. 10 meters |
| Speaker Impedance | 32Ω |
| Sensitivity | 109dB |
| Charging Port | Type-C |
| Waterproof | Yes |
| Sound Isolating | Yes |
| Active Noise-Cancellation | No |
| With Microphone | Yes |
| Control Button | Yes |
| Volume Control | Yes |
| Support APP | Yes |
| Audio Codecs | AAC, SBC |
9. User Tips
- Optimize for Gaming: Remember to switch to Gaming Mode (long press right earphone for 2 seconds) for the lowest latency experience during gameplay.
- Ergonomic Fit: The earphones are designed for comfort. Experiment with the fit to ensure a secure and comfortable seal for optimal sound quality and passive noise isolation.
- Regular Charging: For consistent performance, make it a habit to place the earphones back in their charging case when not in use. This ensures they are always ready for your next session.
- Connectivity: While the Bluetooth 5.4 offers a stable connection, keeping your device closer to the earphones (within 10 meters) and avoiding physical obstructions can further enhance connection stability.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided by your retailer or the official TRANSFORMERS product support channels. Keep your proof of purchase for any warranty claims.
