Introduction
Thank you for choosing the SmoothTec Wireless Headphones. These open-ear Bluetooth 5.4 earphones are designed to provide a high-fidelity sound experience with comfort and durability. This manual will guide you through the setup, operation, and maintenance of your new headphones to ensure optimal performance and longevity.

Image: SmoothTec Wireless Headphones (Purple) with charging case and a person wearing them. These headphones offer an open-ear design for comfort.
Safety Information
Please read all safety warnings carefully before using this product to ensure safe and proper operation.
- Hearing Protection: Avoid listening at high volume levels for extended periods to prevent hearing damage.
- Driving Safety: Do not use headphones while driving or cycling where the inability to hear ambient sounds could pose a danger.
- Water Exposure: While the headphones have an IPX5 waterproof rating, avoid submerging them in water. Dry them thoroughly if exposed to sweat or splashes.
- Temperature: Do not expose the product to extreme temperatures (below 0°C or above 45°C).
- Cleaning: Use a soft, dry cloth for cleaning. Do not use harsh chemicals or abrasive materials.
- Disassembly: Do not attempt to disassemble or modify the headphones. This will void the warranty and may cause damage.
Package Contents
Verify that all items are present in your package:
- 1 Set * Hy-T26 X15 Pro Earphone Wireless Bluetooth (includes left and right earbuds and charging case)
- 1 * Type-C Charging Cable
- 1 * User Manual (this document)
- 1 * Free Silicone Lanyard (may be included with some models)
Product Overview
Familiarize yourself with the components of your SmoothTec Wireless Headphones.

Image: The Hy-T26 X15 Pro Earphones are designed for Hi-Fi audio, intelligent noise reduction, and an immersive sound experience.
- Earbuds: Left and Right open-ear design earbuds with integrated touch controls.
- Charging Case: Portable case for charging and storing your earbuds. Features a Type-C charging port.
- Microphone: Built-in for hands-free calls.
- LED Indicator: Displays charging status and connection status.

Image: The ergonomic ear-mount design ensures comfort for long periods of wear, utilizing a return arc cavity design for a secure fit.
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place both earbuds into the charging case.
- Connect the Type-C charging cable to the charging port on the case and plug the other end into a USB power adapter (not included) or a computer's USB port.
- The LED indicator on the case will show charging status. A full charge takes approximately 1 hour.
- Once fully charged, disconnect the charging cable. The earbuds have a 40 mAh battery capacity, and the charging case has a 300 mAh capacity, providing up to 20 hours of total battery life.
2. Pairing with Your Device
The earbuds automatically enter pairing mode when taken out of the charging case.
- Ensure the earbuds are charged.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for "Hy-T26 X15 Pro" or "SmoothTec Headphones" in the list of available Bluetooth devices.
- Select the device name to connect. Once connected, you will hear a confirmation tone, and the LED indicator on the earbuds will change.
- The headphones will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.
Operating Instructions
Your SmoothTec Wireless Headphones feature intuitive touch controls on each earbud.

Image: Detailed touch control instructions for both the left and right earbuds.
| Action | Left Earbud | Right Earbud |
|---|---|---|
| Play/Pause Music | Single click touch area | Single click touch area |
| Next Track | N/A | Double click touch area |
| Previous Track | Double click touch area | N/A |
| Volume Up | N/A | Three touches to the area |
| Volume Down | Three touches to the area | N/A |
| Answer/Hang Up Call | Double click the touch area | Double click the touch area |
| Reject Call | Hold for 2 seconds | Hold for 2 seconds |
| Summon Voice Assistant | Hold down for about 3 seconds | Hold down for about 3 seconds |
| Power On/Off | Press and hold the touch area for 4 seconds | Press and hold the touch area for 4 seconds |
Note: The open-ear design allows you to hear ambient sounds while enjoying your audio, enhancing safety in certain environments. The intelligent noise reduction feature primarily focuses on improving call clarity by filtering background noise during conversations.
Maintenance
Proper maintenance ensures the longevity and performance of your headphones.
- Cleaning: Regularly wipe the earbuds and charging case with a soft, dry, lint-free cloth. Do not use abrasive cleaners, alcohol, or chemical solvents.
- Water Resistance (IPX5): The headphones are resistant to sweat and light splashes. Do not rinse them under running water or submerge them. If they get wet, wipe them dry immediately before placing them back in the charging case.
- Storage: When not in use, store the earbuds in their charging case to protect them from dust and damage. Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Charging: Charge the headphones regularly, even if not used frequently, to maintain battery health.

Image: The IPX5 waterproof rating makes these headphones suitable for workouts and outdoor activities, resisting sweat and splashes.
Troubleshooting
If you encounter issues with your SmoothTec Wireless Headphones, try the following solutions:
| Problem | Possible Cause / Solution |
|---|---|
| Headphones won't turn on. | Battery is low. Place earbuds in the charging case and charge fully. |
| Cannot pair with device. |
|
| No sound or low volume. |
|
| Intermittent connection. |
|
| Earbuds not charging. |
|
Specifications
Detailed technical specifications for the SmoothTec Wireless Headphones Hy-T26 X15 Pro:
| Feature | Specification |
|---|---|
| Model Name | Wireless Headphones (Hy-T26 X15 Pro) |
| Model Number | XGT543 |
| Bluetooth Version | Bluetooth 5.4 |
| Transmission Distance | 10m-15m (33-49 feet) |
| Charging Time | About 1 hour |
| Battery Life (Earbuds) | Up to 20 hours (total with charging case) |
| Headset Battery Capacity | 40 mAh (each earbud) |
| Charging Case Battery Capacity | 300 mAh |
| Charging Interface | Type-C |
| Weight | 110g (total package weight) |
| Water Resistance Rating | IPX5 (sweat and splash resistant) |
| Ear Placement | Open Ear |
| Material | Silicone |
| Frequency Range | 20 Hz - 20,000 Hz |
| Noise Control | Sound Isolation (Intelligent Noise Reduction for calls) |

Image: Internal structure of the earbud speaker, featuring a powerful composite silicone titanium film horn for high-fidelity sound.
Warranty and Support
The manufacturer provides a standard warranty for this product against defects in materials and workmanship under normal use. Please refer to the warranty card included in your package for specific terms and conditions, or contact the seller for details.
For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. We are available 24 hours online to reply to your inquiries.
Contact Information:
- Seller: [Refer to your purchase platform for seller details]
- Manufacturer: Generic (SmoothTec)
- Online Support: Please use the messaging system on the platform where you purchased the product.