1. Introduction
Welcome to the Truefree O2 Open Ear Headphones user manual. These wireless earbuds are designed for comfort, situational awareness, and high-quality audio, making them ideal for various activities including workouts and office use. This manual provides detailed instructions on how to set up, operate, and maintain your Truefree O2 headphones.
The Truefree O2 headphones with their charging case.
Promotional video showcasing features of Truefree O2 Open Ear Headphones.
2. Package Contents
Ensure all items are present in your Truefree O2 package:
- Truefree O2 Open-ear Headphones
- Type-C Charging Cable
- Charging Case
- User Manual
What's included in the Truefree O2 package.
3. Specifications
| Feature | Detail |
|---|---|
| Model Name | Truefree O2 |
| Item Condition | New |
| Material | ABS |
| Weight | 8g (per earbud) / 140g (total package) |
| Voice Assistant Built-in | No |
| Sound Isolating | No (Open Ear Design) |
| Category | Earphones & Headphones |
| Charging Method | Charging case (Type-C) |
| Headphone Pads Material | Other (Ultra-soft silicone ear hooks) |
| Driver Diameter | 15.4mm |
| Impedance Range | up to 32 Ω |
| Bluetooth Version | 5.3 |
| Bluetooth Profile | HFP, A2DP, AVRCP, AVCTP, AVDTP, GAVDP, SPP, HID, PBAP, DID |
| Codecs | AAC, SBC |
| With Microphone | Yes (Dual-mic) |
| Is Wireless | Yes |
| Support APP | Yes (Truefree APP) |
| Waterproof | IPX5 |
| Frequency Response Range | 20 - 20000 Hz |
| Plug Type | None |
| Active Noise-Cancellation | No (ENC for calls) |
| Volume Control | Yes |
| Control Button | No (Touch Control) |
| Vocalism Principle | Dynamic |
| Wireless Type | Bluetooth |
| Connectors | Type-C |
| Communication | True wireless |
| Style | Wired in-ear headphones (Open Ear Hook) |
| Certification | CE, FCC, RoHS |
| Origin | Mainland China |
| Support Memory Card | No |
| Play Time (Single Charge) | Approx. 6.5 hours (at 60% volume) |
| Total Play Time (with Charging Case) | Approx. 22 hours |
| Earbuds Charging Time | Approx. 1.5 hours |
| Charging Case Charging Time | Approx. 2 hours |
| Earbud Power Capacity | 140mAh (70mAh*2) |
| Charging Case Power Capacity | 500mAh |
| Earbud Dimension (L*W*H) | 91.7 x 57 x 26mm |
| Charging Case Dimension (L*W*H) | 45.6 x 40 x 15.5mm |
| Game Mode Latency | 60ms |
| Noise Cancellation for Calls | ENC Tech & Four Microphones |
4. Setup
4.1 Initial Pairing
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for "TRUEFREE O2" in the list of available Bluetooth devices.
- Select "TRUEFREE O2" to connect. You will hear a confirmation tone once connected.
4.2 Truefree APP Installation
To unlock full customization and features, download the "Truefree" APP from your device's app store (e.g., Apple App Store, Google Play Store).
Customize your audio experience and control functions via the dedicated Truefree APP.
5. Operating Instructions
5.1 Wearing the Earbuds
The Truefree O2 features ultra-soft silicone ear hooks and a lightweight design (8g per earbud) for a secure and comfortable fit. Place the ear hook over your ear and adjust the earbud for optimal sound and comfort.
The ergonomic design ensures a secure and comfortable fit for active users.
5.2 Touch Controls
The Truefree O2 earbuds utilize smart touch controls. Specific functions can be customized via the Truefree APP. Refer to the app for detailed control mapping.
5.3 Game Mode
Activate Game Mode via the Truefree APP for a low latency experience (60ms), which is crucial for gaming. This mode helps accurately capture in-game audio cues like footsteps and gunfire.
Equipped with Bluetooth 5.3 for stable connection and a 70ms low latency game mode.
5.4 Multipoint Connection
The Truefree O2 supports multipoint connection, allowing you to connect the earbuds to two devices simultaneously. Enable "Dual Device Connection" in the Truefree APP to seamlessly switch between music, videos, and calls on your connected devices.
6. Charging
- Earbuds Charging: Place the earbuds into the charging case. They will begin charging automatically. A full charge takes approximately 1.5 hours.
- Charging Case: Connect the Type-C charging cable to the charging case and a power source. The charging case takes approximately 2 hours for a full charge.
- Battery Life: Enjoy up to 6.5 hours of playtime on a single earbud charge (at 60% volume), and a total of 22 hours with the charging case.
Features IPX5 waterproof rating for sports, extended battery life, and fast Type-C charging.
7. Maintenance
7.1 Cleaning
Regularly clean your earbuds and charging case with a soft, dry cloth. Avoid using abrasive materials or harsh chemicals.
7.2 Water Resistance
The Truefree O2 headphones are IPX5 waterproof, meaning they are resistant to sweat and light splashes. Do not submerge them in water or expose them to heavy rain.
7.3 Charging Case Material
The charging case is made of a new paint-free material with a laser texture, designed to be environmentally friendly and scratch-resistant.
The charging case features a stylish and durable design with environmentally friendly materials.
8. Troubleshooting
- No Sound: Ensure the earbuds are charged and properly connected to your device. Check your device's volume settings.
- Connection Issues: Try unpairing and re-pairing the earbuds. Ensure no other Bluetooth devices are interfering.
- Earbuds Not Charging: Verify the charging cable is securely connected and the charging case has power. Clean the charging contacts on both the earbuds and the case.
- App Not Connecting: Ensure Bluetooth is enabled and the earbuds are paired with your device before opening the Truefree APP.
9. User Tips
- Situational Awareness: The open-ear design allows you to hear your surroundings. This is particularly useful for outdoor activities like cycling or running, and in environments where you need to interact with others, such as an office or gym.
- Enhanced Bass: For a richer audio experience, utilize the bass enhancement algorithm available through the Truefree APP.
- Clear Calls: The dual-mic ENC noise cancelling technology is specifically designed to filter out external noise during calls, ensuring your voice is transmitted clearly.
- Secure Fit: The NiTi alloy memory steel wire and ergonomic ear hooks provide a stable fit. Experiment with the positioning to find the most secure and comfortable fit for your ear shape, especially during vigorous activities.
Detailed view of the 15mm dynamic driver and directional sound outlet for rich sound with less leakage.
Stay aware of your surroundings while enjoying music, and experience crystal clear calls with ENC noise cancelling.
10. Warranty and Support
Truefree is committed to providing excellent customer experience. If you encounter any problems or have suggestions regarding your Truefree O2 Open Ear Headphones, please do not hesitate to contact Truefree customer support. We are ready to offer you a satisfactory solution.