1. Introduction
Thank you for choosing the EKO iSteel Bluetooth 5.0 Wireless Earbuds. These in-ear earbuds connect to your smartphone via Bluetooth, offering a convenient listening experience. Each earbud includes a microphone, allowing them to be used simultaneously with one device or separately with two different devices. With a 40mAh battery in each earbud, you can enjoy approximately 3 hours of playback. The included 500mAh charging case provides up to 3 full recharges, extending your listening time. Lightweight and efficient, these earbuds are designed for comfort and performance.

Image 1.1: EKO iSteel Bluetooth 5.0 Wireless Earbuds and Charging Case.
2. Important Safety Information
- Do not expose the earbuds or charging case to extreme temperatures, direct sunlight, or fire.
- Avoid dropping, disassembling, or modifying the device.
- Keep the device away from water and other liquids. If it gets wet, dry it thoroughly before use.
- Use only the provided micro-USB charging cable or a certified equivalent.
- Prolonged listening at high volume levels may cause hearing damage. Adjust volume to a safe level.
- Keep out of reach of children and pets. Small parts may pose a choking hazard.
- Do not use the earbuds while driving, cycling, or operating machinery where external sounds are necessary for safety.
3. Package Contents
Please check the package for the following items:
- 1x Charging Case
- 2x EKO iSteel Bluetooth Earbuds
- 1x Micro-USB Charging Cable
- 1x User Manual
4. Product Overview
The EKO iSteel earbuds feature a compact design with intuitive controls. Each earbud has a multi-function button and LED indicator.
Earbud Components:
- Multi-function Button: Used for power, playback, and call control.
- LED Indicator: Displays pairing status, power, and charging status.
- Microphone: For hands-free calls.
- Charging Contacts: For charging inside the case.
Charging Case Components:
- Earbud Charging Slots: Securely holds and charges the earbuds.
- Micro-USB Charging Port: For charging the case.
- Charging Indicator: Shows the charging status of the case.
5. Setup: Pairing Your Earbuds
Follow these steps to pair your EKO iSteel earbuds with your device:
- Power On Earbuds: Turn on both earbuds successively by pressing and holding the button on each earbud until a flashing blue/red light appears.
- Earbud Synchronization: Wait 5 seconds for the earbuds to synchronize with each other. Then, double-press the button on your preferred earbud. The LEDs on both earbuds will briefly flash blue, indicating successful synchronization.
- Connect via Bluetooth: Go to the Bluetooth settings on your device (smartphone, tablet, etc.) and select "EKO iSteel" from the list of available devices.
Once paired, the earbuds will automatically connect to your device when powered on and within range.
6. Operating Your Earbuds
The multi-function button on each earbud controls various functions:
- Power On/Off: Long press the earbud button.
- Play/Pause: Single press the earbud button.
- Redial Last Number: Double-click the earbud button.
- Answer/End Call: Single press the earbud button.
- Reject Call: Single press the earbud button during an incoming call.
- Next Song: Long press (2 seconds) the earbud button.
Note: During phone calls, only one earbud will be active for communication.
7. Charging Your Earbuds and Case
Charging the Earbuds:
Place the earbuds into their respective slots in the charging case. They will automatically begin charging. The LED indicators on the earbuds will show their charging status.
Charging the Case:
Connect the micro-USB charging 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 charging indicator on the case will show its charging status. A full charge of the case can provide up to 3 full recharges for the earbuds.
8. Care and Maintenance
- Cleaning: Use a soft, dry cloth to clean the earbuds and charging case. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged. Store in a cool, dry place.
- Battery Life: To preserve battery life, fully charge the device at least once every three months if not used regularly.
- Avoid Damage: Do not expose to extreme temperatures, humidity, or dust. Avoid dropping or subjecting the device to strong impacts.
9. Troubleshooting
| Problem | Solution |
|---|---|
| Earbuds not pairing with device. |
|
| Only one earbud is working. |
|
| Earbuds not charging. |
|
| Poor sound quality. |
|
10. Specifications
| Model Number | TTE398 |
| Brand | EKO |
| Color | Red |
| Form Factor | In-ear |
| Connectivity Technology | Wireless (Bluetooth 5.0) |
| Bluetooth Version | V5.0 |
| Bluetooth Frequency | 2.4Ghz |
| Bluetooth Range | 10 meters |
| Earbud Battery Capacity | 40mAh |
| Charging Case Battery Capacity | 500mAh |
| Earbud Playtime | Approx. 3 hours |
| Standby Time | Approx. 50 hours |
| Charging Method | Micro-USB cable |
| Charging Case Dimensions | 65 x 55 x 27 mm |
| Charging Case + Earbuds Weight | 35g |
| Earbud Dimensions | 45 x 20 mm |
| Earbud Weight | 5g (each) |
| Product Features | Rechargeable Battery |
11. Warranty and Support
EKO products are designed and manufactured to the highest quality standards. For detailed warranty information, please refer to the warranty card included in your package or visit the official EKO website.
If you encounter any issues or have questions regarding your EKO iSteel Bluetooth 5.0 Wireless Earbuds, please contact our customer support. Contact details can typically be found on the product packaging or the official EKO website.