HLBETMETH-BLACK
Open XG99 Headphones User Manual
Model: HLBETMETH-BLACK
Introduction
Thank you for choosing the Open XG99 Headphones. These wireless Bluetooth earbuds are designed for comfort and high-quality audio, featuring an open-ear design, Bluetooth 5.4 connectivity, and extended battery life. This manual provides detailed instructions on how to set up, operate, and maintain your headphones to ensure optimal performance.

Image: The Open XG99 Headphones in black, along with their charging case. The image also displays the headphones in white and blue, and shows a person wearing the open-ear design comfortably.
What's in the Box
Please check the package contents to ensure all items are present:
- 1 Pair * Open XG99 Headphones
- 1 Pc * Charging Case
- 1 Pc * Instruction manual (This document)
- 1 Pc * Data cable (Type-C)
- 1 Pc * Lanyard

Image: A display of the Open XG99 Headphones and their charging cases in black, white, and blue. The image emphasizes features like newly upgraded Bluetooth 5.4, silicone ear-hooks for comfort, and an HD digital display screen.
Setup
1. Charging the Headphones and Case
Before first use, fully charge the headphones and the charging case. The charging case has a 300mAh capacity, and each earbud has a 40mAh capacity. Charging time is approximately 1 hour.
- Place the headphones into the charging case, ensuring they are correctly seated.
- Connect the provided Type-C data 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 digital display on the charging case will indicate the charging status.

Image: A visual representation of the Open XG99 Headphones charging case, highlighting its large battery capacity and convenient Type-C charging port. The digital display shows the current battery level, indicating readiness for extended use.
2. Bluetooth Pairing
The Open XG99 Headphones use Bluetooth 5.4 for a stable and fast connection.
- Open the charging case. The headphones will automatically enter pairing mode (indicated by a flashing light on the earbuds).
- On your device (smartphone, tablet, computer), go to the Bluetooth settings.
- Search for "Open XG99" or a similar name in the list of available devices.
- Select "Open XG99" to connect. Once connected, the earbud indicator light will stop flashing.
- The headphones will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.
3. Wearing the Headphones
The Open XG99 Headphones feature an ergonomic hanging ear design for comfortable and secure fit.
- Identify the left (L) and right (R) earbuds.
- Gently hook the earbud over your ear, ensuring the speaker portion is positioned comfortably near your ear canal without entering it directly, allowing for open listening.
- Adjust the ear hook for a snug and stable fit.

Image: A close-up of a person wearing the Open XG99 Headphones, illustrating the "Upgrade Hanging Ear Design" which allows for comfortable, open listening both indoors and outdoors.
Operating Instructions
The Open XG99 Headphones are controlled via push buttons on the earbuds.
Power On/Off
- Power On: Open the charging case, or press and hold the multi-function button on each earbud for 3 seconds.
- Power Off: Place the earbuds back into the charging case, or press and hold the multi-function button on each earbud for 5 seconds.
Music Playback
- Play/Pause: Single press the multi-function button on either earbud.
- Next Track: Double press the multi-function button on the right earbud.
- Previous Track: Double press the multi-function button on the left earbud.
- Volume Up: Triple press the multi-function button on the right earbud.
- Volume Down: Triple press the multi-function button on the left earbud.
Call Management
- Answer/End Call: Single press the multi-function button on either earbud.
- Reject Call: Press and hold the multi-function button on either earbud for 2 seconds.
- Voice Assistant: Press and hold the multi-function button on either earbud for 3 seconds (when not on a call).
Maintenance
Proper maintenance ensures the longevity and performance of your Open XG99 Headphones.
- Cleaning: Use a soft, dry, lint-free cloth to clean the earbuds and charging case. Do not use abrasive cleaners, alcohol, or chemical solvents.
- Water Resistance: The headphones are waterproof. However, avoid prolonged submersion in water. Dry them thoroughly before placing them back in the charging case.
- Storage: When not in use, store the headphones in their charging case to protect them from dust and damage. Store in a cool, dry place away from extreme temperatures.
- Battery Care: To preserve battery life, charge the headphones regularly, even if not used frequently. Avoid fully depleting the battery for extended periods.
Troubleshooting
If you encounter any issues with your Open XG99 Headphones, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones not pairing | Bluetooth is off on device; headphones not in pairing mode; interference. | Ensure Bluetooth is enabled on your device. Place headphones back in case, close, then open to re-enter pairing mode. Move closer to your device. Forget "Open XG99" from your device's Bluetooth list and re-pair. |
| No sound from one or both earbuds | Low battery; not connected; volume too low. | Charge the headphones. Ensure they are properly connected to your device. Increase volume on both the headphones and your device. |
| Charging case not charging | Faulty cable or power source. | Try a different Type-C cable and a different USB power adapter. Ensure the cable is securely connected. |
| Poor sound quality | Distance from device; interference; dirty earbuds. | Move closer to your device. Avoid environments with strong Wi-Fi or other Bluetooth signals. Clean the earbuds gently. |
Specifications
Detailed technical specifications for the Open XG99 Headphones:
- Model Name: HLBETMETH-BLACK
- Bluetooth Version: Bluetooth 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
- Battery Life (Headphones): 4-8 Hours (up to 6 hours specified in specs, up to 90 hours with charging case)
- Drivers: 14mm Large Dynamic Drivers
- Sound Technology: Directional Sound Technology, 360° Surround Sound
- Material: Plastic
- Item Weight: 50 Grams (1.76 ounces)
- Water Resistance Level: Waterproof
- Control Method: Push Button
- Ear Placement: Open Ear
- Form Factor: On Ear
- Included Components: Cable, User Manual, Lanyard, Charging Case

Image: An exploded view diagram of the Open XG99 headphone, illustrating its internal structure and emphasizing the PU composite diaphragm speaker unit responsible for sound production.
Warranty and Support
For warranty information or technical support, please refer to the contact details provided on the product packaging or the official Generic brand website. Keep your purchase receipt as proof of purchase for any warranty claims.
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