1. Introduction
The Open XG99 Headphones are designed to provide a comfortable and immersive audio experience. Featuring advanced directional sound technology and 14mm dynamic drivers, these open-ear earbuds deliver clear highs and deep bass. With Bluetooth 5.4 connectivity, they offer stable and fast pairing for uninterrupted listening.
This manual provides detailed instructions on how to set up, operate, and maintain your Open XG99 Headphones to ensure optimal performance and longevity.

Figure 1.1: Open XG99 Headphones, charging case, and usage examples.
2. Package Contents and Setup
2.1. Package Contents
Before you begin, please ensure all items are present in the package:
- 1 Pair of Open XG99 Headphones
- 1 Charging Case
- 1 Instruction Manual (this document)
- 1 Data Cable (Type-C)
- 1 Lanyard
2.2. Initial Charging
It is recommended to fully charge the headphones and charging case before first use.
- Place the Open XG99 Headphones into their respective slots in the charging case.
- Connect the provided Type-C data cable to the charging port on the case and the other end to a USB power source (e.g., wall adapter, computer USB port).
- The charging case features a digital display screen that indicates the battery level. Allow approximately 1 hour for a full charge.

Figure 2.1: Charging case with Type-C port and digital battery display.
2.3. Bluetooth Pairing
Follow these steps to pair your Open XG99 Headphones with your device:
- Ensure the headphones are charged and placed in the charging case.
- Open the charging case. The headphones will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), navigate to the Bluetooth settings.
- Turn on Bluetooth and search for available devices.
- Select "Open XG99" from the list of found devices.
- Once connected, the headphones will indicate successful pairing (e.g., a voice prompt or LED indicator).
The headphones utilize Bluetooth 5.4 technology for a stable and fast connection with an effective range of up to 10 meters.

Figure 2.2: Open XG99 Headphones highlighting Bluetooth 5.4 connectivity.
3. Operating Instructions
3.1. Wearing the Headphones
The Open XG99 Headphones feature an ergonomic hanging ear design for comfortable and secure fit, allowing your ears to breathe freely during extended use.

Figure 3.1: Proper wearing of the Open XG99 Headphones.
3.2. Audio Features
The Open XG99 Headphones incorporate several advanced audio technologies:
- Directional Sound Technology: Delivers audio directly to your ears while minimizing sound leakage, providing a private listening experience.
- 14mm Large Dynamic Drivers: Engineered to produce robust bass and crystal-clear treble across various music genres.
- 360° Surround Sound: Creates an immersive, three-dimensional audio environment, enhancing both music and movie experiences.

Figure 3.2: Internal components, highlighting the speaker unit.
3.3. Battery Life and Charging
The headphones offer extended playtime, with the charging case providing additional power:
- Earbud Battery Capacity: 40mAh per earbud.
- Charging Case Battery Capacity: 300mAh.
- Playtime: Up to 6 hours on a single charge for the earbuds (as per specifications). The charging case extends total playtime significantly, with some visuals indicating up to 25 hours and feature bullets stating up to 90 hours. Actual performance may vary.
- Charging Time: Approximately 1 hour for a full charge of the earbuds and case.
The digital display on the charging case provides real-time battery status, ensuring you are aware of the remaining power.
4. Maintenance
4.1. Cleaning
To maintain the performance and appearance of your headphones:
- Gently 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 on both the earbuds and case are clean and free of debris.
4.2. Storage
When not in use, store the headphones in their charging case to protect them from dust and damage.
Store the device in a cool, dry place, away from extreme temperatures and direct sunlight.
4.3. Water Resistance
The Open XG99 Headphones are rated as waterproof. While they can withstand splashes and sweat, they are not designed for submersion. Avoid prolonged exposure to water or use during swimming.
5. Troubleshooting
If you encounter issues with your Open XG99 Headphones, please refer to the following common solutions:
| Problem | Possible Cause / Solution |
|---|---|
| Headphones do not turn on or connect. |
|
| Cannot pair with device / "Authorization code invalid". |
|
| No sound or low volume. |
|
| Charging issues. |
|
6. Specifications
| Feature | Detail |
|---|---|
| Model Name | HLBETMETH-WHITE |
| Bluetooth Version | 5.4 |
| Effective Range | 10 Meters |
| Earbud Battery Capacity | 40mAh (Per Earbud) |
| Charging Case Battery Capacity | 300mAh |
| Charging Time | Approximately 1 Hour |
| Charging Port | Type-C |
| Water Resistance Level | Waterproof |
| Item Weight | 50 Grams (approx. 1.76 ounces) |
| Manufacturer | Generic |
| Color | White (as per current product variant) |
7. Warranty and Support
7.1. Warranty Information
Specific warranty details for the Open XG99 Headphones are typically provided by the manufacturer or retailer at the time of purchase. Please refer to your purchase documentation or contact the seller for information regarding warranty coverage and terms.
7.2. Customer Support
For technical assistance, troubleshooting beyond this manual, or inquiries regarding your product, please contact the manufacturer or the point of purchase. Contact information can usually be found on the product packaging or the retailer's website.





