1. Introduction
The Transformers TF-T03 are True Wireless Stereo (TWS) Bluetooth 5.3 earphones designed for an immersive audio experience, particularly for gaming. Featuring low latency, HiFi stereo sound, and a built-in microphone, these earbuds offer seamless connectivity and comfortable wear for various activities, from mobile gaming to office use.

The TF-T03 earphones and their transparent charging case.
2. Package Contents
Please check the box for the following items:
- 2 x Bluetooth Earphones (Left and Right)
- 1 x Charging Case
- 1 x USB Type-C Charging Cable
- 1 x User Manual

Contents of the TF-T03 product package.
3. Setup
3.1 Charging the Earphones and Case
Before first use, ensure both the earphones and the charging case are fully charged. The charging case has a capacity of 300mAh, and each earphone has a 25mAh battery.
- Place the earphones into the charging case.
- Connect the charging case to a power source using the provided USB Type-C charging cable.
- The charging time for both the earphones and the charging case is approximately 1.5 hours.
- A full charge provides up to 20 hours of battery life for the earphones (with case).

Battery life and charging details.
3.2 Initial Pairing
The TF-T03 earphones feature automatic pairing for convenience.
- Open the charging case. The earphones will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Transformers TF-T03" from the list of found devices to connect.
- Once connected, the earphones will automatically pair with your device on subsequent uses when removed from the case.

Automatic pairing upon removal from the case.
3.3 Device Compatibility
The TF-T03 earphones are compatible with any device that supports Bluetooth, including mobile phones, tablet PCs, and computers running Android, Windows, or iOS operating systems.

Broad compatibility with various operating systems.
4. Operating Instructions
The TF-T03 earphones feature touch controls for various functions.
4.1 Basic Controls
- Power On: Earphones power on automatically when removed from the charging case.
- Power Off: Earphones power off automatically when placed back into the charging case.
- Play/Pause: Single tap on either earphone.
- Next Song: Triple tap the right earphone.
- Previous Song: Triple tap the left earphone.
- Volume Control: (Information not explicitly provided, typically controlled via connected device or specific earbud gestures not detailed here).
4.2 Call Management
- Answer Call: Double-click either the left or right earphone.
- Reject Call: Long press either the left or right earphone for 2 seconds.
- Hang Up Call: Double-click either the left or right earphone during a call.
4.3 Voice Assistant
- Activate Voice Assistant (e.g., Siri): Long press the left earphone for 2 seconds.
4.4 Independent Earphone Use
The TF-T03 earphones support free switching between main and auxiliary modes, allowing either earphone to be used independently.

Either earphone can be used independently.
4.5 Gaming Experience
These earphones are optimized for gaming with low latency audio and video synchronization, providing a richer and more realistic game sound field atmosphere.

Enhanced gaming experience with synchronized audio and video.
5. Maintenance
To ensure the longevity and optimal performance of your Transformers TF-T03 earphones, follow these maintenance guidelines:
- Cleaning: Regularly wipe the earphones and charging case with a soft, dry, lint-free cloth. Avoid using harsh chemicals, cleaning solvents, or strong detergents.
- Storage: When not in use, store the earphones in their charging case to protect them from dust, scratches, and accidental damage. Keep them in a cool, dry place away from extreme temperatures.
- Avoid Moisture: The earphones are not waterproof. Avoid exposing them to water, rain, or excessive humidity.
- Charging: Use only the provided charging cable or a certified Type-C cable. Do not attempt to charge with damaged cables or chargers.
- Handle with Care: Avoid dropping the earphones or subjecting them to strong impacts.
6. Troubleshooting
If you encounter issues with your TF-T03 earphones, refer to the following common solutions:
6.1 Earphones Not Pairing
- Ensure the earphones are charged.
- Make sure Bluetooth is enabled on your device.
- Place the earphones back into the charging case, close the lid, wait a few seconds, then open the lid and try pairing again.
- If the issue persists, try forgetting the device in your phone's Bluetooth settings and re-pairing from scratch.
6.2 Sound Quality Issues / No Sound
- Check the volume level on both your earphones and your connected device.
- Ensure the earphones are properly seated in your ears.
- Try disconnecting and reconnecting the Bluetooth connection.
- If only one earphone is working, try placing both back in the case and taking them out again to re-sync.
6.3 Sound Leakage
The TF-T03 earphones are designed to minimize sound leakage. As long as the volume is not set to maximum, there should be no significant sound leakage. For ear health, it is recommended to avoid using the maximum volume for extended periods.
6.4 Earphones Uncomfortable to Wear
The earphones are designed to fit most ear sizes comfortably. If you experience discomfort, try adjusting their position in your ear. Ensure they are securely but gently placed.
7. Specifications
| Feature | Specification |
|---|---|
| Model | Transformers TF-T03 |
| Bluetooth Version | 5.3 |
| Communication | True Wireless |
| Style | In-ear |
| Driver Diameter | 13mm |
| Frequency Response Range | 20 - 20000Hz |
| Sensitivity | 96dB (or 107dB ± 3dB from image) |
| Impedance Range | up to 32 Ω (or 16Ω from image) |
| Resistance | 32Ω |
| Max Output | 10mW |
| Total Harmonic Distortion | 1% |
| Bluetooth Connection Distance | Up to 10 meters / 33 feet |
| Earphone Battery Capacity | 25mAh (per earphone) |
| Charging Case Capacity | 300mAh |
| Battery Life (Earphones) | Approx. 20 hours (with charging case) |
| Charging Time | Approx. 1.5 hours (earphones and case) |
| Charging Method | Charging case (Type-C port) |
| With Microphone | Yes |
| Active Noise-Cancellation | No |
| Waterproof | No |
| Material | Plastic |
| Weight | 148g |
| Certification | CE |
Note: Some specifications may vary slightly based on manufacturing batches or measurement methods.

Detailed headphone parameters.
8. User Tips
- Optimal Comfort: The earphones are designed for comfort. If you feel any discomfort, try adjusting their position slightly in your ear.
- Battery Management: For best battery life, always place the earphones back into their charging case when not in use. This ensures they are ready for your next session.
- Touch Control Familiarity: Practice the touch controls (single, double, triple tap, long press) to become familiar with managing music, calls, and voice assistant functions without needing to access your device.
- Gaming Mode: Take advantage of the low latency feature for an enhanced gaming audio experience.
- Independent Use: Remember that either earbud can be used on its own, offering flexibility for calls or listening while staying aware of your surroundings.
9. Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact the seller or retailer from whom you purchased the Transformers TF-T03 earphones. Keep your proof of purchase for any warranty services.





