1. Product Overview
The OPPO Enco Air lite ETI81 are True Wireless Bluetooth Headsets designed for a seamless audio experience. They feature call noise cancelling and are compatible with various devices including Apple, Huawei, and Glory smartphones. The earbuds offer a comfortable in-ear style and are built for durability with an IP54 dust and waterproof rating.
Note: The China version of OPPO ENCO Buds and OPPO Enco Air lite share the same model number (ETI81). The product name displayed on packaging may vary randomly between "Enco Air lite" and "Enco Buds" but refers to the same device.


2. Setup and Initial Use
2.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case. Place the earbuds into the charging case and connect the case to a power source using a Type-C cable. The indicator light on the case will show charging status.
A quick 15-minute charge can provide approximately 1 hour of music listening time.
2.2 Pairing with Your Device
- Ensure the earbuds are in the charging case and the case lid is open.
- On your smartphone or Bluetooth-enabled device, go to Bluetooth settings and turn on Bluetooth.
- Look for "OPPO Enco Air lite" or "OPPO Enco Buds" in the list of available devices.
- Select the earbuds to pair. Once connected, you will hear an audio prompt, and the earbuds will be ready for use.

3. Operating Instructions
3.1 Basic Controls
The earbuds feature touch controls for various functions. While specific gestures are not detailed, common touch controls for similar devices include:
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Answer/End Call: Single tap on either earbud.
- Reject Call: Long press on either earbud.
- Volume Control: The earbuds support volume control, typically through specific tap sequences or long presses. Refer to your device's Bluetooth settings for customization options.
3.2 Call Noise Cancelling
The earbuds are equipped with call noise cancelling technology to ensure clear communication during calls by reducing ambient noise.
3.3 Game Mode (Low Latency)
For an optimized gaming experience with synchronized audio and video, activate the high-performance low latency game mode. This can typically be done with three touches on one of the earbuds.

3.4 Battery Life
The OPPO Enco Air lite offers up to 24 hours of total battery life with the charging case. The earbuds themselves provide several hours of playback on a single charge.

4. Maintenance and Care
4.1 Dust and Water Resistance
The earbuds are rated IP54 for dust and water resistance. This means they are protected against limited dust ingress and water splashes from any direction. They are suitable for use during workouts or in light rain, but should not be submerged in water.

4.2 Cleaning
To maintain optimal performance and hygiene:
- Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Ensure charging contacts are clean and dry before placing earbuds in the case.
5. Troubleshooting
5.1 Earbuds Not Pairing
- Ensure both earbuds are in the charging case and the lid is open.
- Check if the earbuds have sufficient charge.
- Turn off and on Bluetooth on your device.
- Try forgetting the device in your Bluetooth settings and re-pairing.
5.2 No Sound or Intermittent Sound
- Check the volume level on both your device and the earbuds.
- Ensure the earbuds are properly seated in your ears.
- Move closer to your connected device to avoid interference.
- Try disconnecting and reconnecting the Bluetooth connection.
5.3 Charging Issues
- Ensure the charging cable is securely connected to both the case and the power source.
- Try a different charging cable or power adapter.
- Clean the charging contacts on the earbuds and inside the case with a dry cotton swab.
6. Specifications
| Feature | Specification |
|---|---|
| Brand Name | OPPO |
| Model | ETI81 (Enco Air lite / Enco Buds) |
| Style | In-ear |
| Communication | Wireless (Bluetooth) |
| Wireless Type | Bluetooth |
| Bluetooth Version | Other (Specific version not detailed) |
| Connectors | Type-C |
| Vocalism Principle | Dynamic |
| Driver Diameter | 13.2mm |
| Number Of Drivers | 2 |
| Impedance Range | up to 32 Ω |
| Frequency Response Range | 20 - 20000Hz |
| Sensitivity | 40dB |
| Features | With microphone, Active Noise Cancelling |
| With Microphone | Yes |
| Active Noise-Cancellation | Yes |
| Volume Control | Yes |
| Control Button | No (Implies touch controls) |
| Waterproof | Yes (IP54 rated) |
| Charging Method | Charging case |
| Support APP | Yes |
| Material | Plastic |
| Certification | CE |
| Origin | Mainland China |
7. User Tips
- Optimal Fit: Experiment with different ear tip sizes (if provided, or adjust placement) to find the most comfortable and secure fit for the best sound quality and noise isolation.
- Regular Cleaning: Clean your earbuds regularly to prevent wax buildup, which can affect sound quality and charging.
- Firmware Updates: If an accompanying app is available, check for firmware updates to ensure your earbuds have the latest features and performance improvements.
8. Warranty and Support
For warranty information and technical support, please refer to the official OPPO website or contact your point of purchase. Keep your proof of purchase for any warranty claims.





