Sobast EJ-0102
Sobast In-Ear Wireless Sports Headphones
Model: EJ-0102
Introduction
Thank you for choosing Sobast In-Ear Wireless Sports Headphones. This manual provides essential information for setting up, operating, and maintaining your new headphones. Please read it carefully before use to ensure optimal performance and longevity of your device.
Package Contents
- Sobast In-Ear Wireless Sports Headphones (Left and Right)
- Charging Case
- USB-C Charging Cable
- User Manual
Product Overview
The Sobast In-Ear Wireless Sports Headphones are designed for active lifestyles, featuring a secure fit, IPX4 water resistance, and high-resolution audio. The charging case includes an LED display for battery status.

Image: Sobast In-Ear Wireless Sports Headphones with their charging case. The earbuds feature ear hooks for a secure fit, and the case displays battery levels.
Setup
1. Charging the Headphones and Case
- Place the earbuds into the charging case. Ensure they are correctly seated; the LED indicators on the earbuds will light up.
- Connect the USB-C charging cable to the charging port on the case and the other end to a power source (e.g., USB wall adapter, computer USB port).
- The LED display on the charging case will show the current battery level during charging. A full charge takes approximately 1.5 hours.
2. Pairing with Your Device
- Open the charging case. The earbuds will automatically enter pairing mode, indicated by a flashing LED light on the earbuds.
- On your device (smartphone, tablet, PC), enable Bluetooth and search for available devices.
- Select "Sobast EJ-0102" from the list of found devices.
- Once connected, the LED indicator on the earbuds will stop flashing, and your device will confirm the connection.
3. Wearing the Headphones
For optimal sound quality and a secure fit, follow these steps:

Image: A four-step diagram illustrating the correct way to wear the Sobast headphones. It shows confirming left/right, rotating the earbud, hooking it over the ear, and adjusting for a secure fit.
- Identify the left (L) and right (R) earbuds.
- Gently place the earbud into your ear canal.
- Hook the ear hook over the top of your ear, adjusting it until it feels secure and comfortable.
- Ensure the earbud is snug in your ear canal for the best audio experience and stability during movement.

Image: A woman wearing Sobast headphones while cycling, demonstrating the secure and stable fit during physical activity.
Operating Instructions
Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off and begin charging.
Touch Controls
The Sobast headphones feature intuitive touch controls on each earbud:
| Function | Action |
|---|---|
| Play/Pause | Single tap on either earbud |
| Next Track | Double tap on the right earbud |
| Previous Track | Double tap on the left earbud |
| Volume Up | Triple tap on the right earbud |
| Volume Down | Triple tap on the left earbud |
| Answer/End Call | Single tap on either earbud |
| Reject Call | Press and hold either earbud for 2 seconds |
| Activate Voice Assistant | Press and hold either earbud for 3 seconds |
Audio Features
These headphones offer high-resolution audio with powerful bass and clear treble, enhanced by environmental noise cancellation for calls.

Image: An exploded view diagram of the headphone's internal components, highlighting the high-resolution sound drivers responsible for rich bass and clear treble.
The headphones utilize a dual OWS (Open Wireless Stereo) + TWS (True Wireless Stereo) technology, providing both comfort and environmental awareness while maintaining a stable Bluetooth 5.4 connection.
Maintenance
Cleaning
- Regularly clean 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 earbuds and case are clean and dry.
Water Resistance (IPX4)
The headphones are IPX4 water and sweat resistant, making them suitable for sports and exercise. This means they can withstand splashes of water and sweat from any direction. They are not designed for submersion in water.

Image: A woman with water splashing on her face and ear, demonstrating the IPX4 water and sweat resistance of the Sobast headphones during an intense workout.
Storage
When not in use, store the headphones in their charging case to protect them and ensure they remain charged. Avoid extreme temperatures and direct sunlight.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Headphones not powering on | Ensure the charging case and earbuds are charged. Place earbuds in case, close, then open again. |
| Cannot pair with device | Make sure Bluetooth is enabled on your device. Turn off and on Bluetooth. Forget the device in your Bluetooth settings and try pairing again. Ensure earbuds are in pairing mode. |
| No sound or low volume | Check volume levels on both the headphones and your connected device. Ensure earbuds are properly seated in your ears. Reconnect the headphones. |
| Intermittent connection | Ensure you are within the Bluetooth range (typically 10 meters/33 feet) of your device. Avoid obstacles between the headphones and your device. |
| One earbud not working | Place both earbuds back into the charging case, close the lid, wait a few seconds, then open it again. Check if both earbuds are charged. |
Specifications

Image: A diagram illustrating the dimensions of both the Sobast earbud and its charging case, with measurements in millimeters.
| Feature | Detail |
|---|---|
| Model Name | EJ-0102 (Sp24) |
| Connectivity Technology | Bluetooth 5.4 |
| Wireless Communication | Bluetooth |
| Noise Control | Passive Noise Cancellation |
| Water Resistance Level | IPX4 (Water Resistant) |
| Battery Life (Earbuds) | Up to 12 hours |
| Total Playtime with Case | Up to 48 hours |
| Charging Time | Approx. 1.5 hours |
| Charging Port | USB-C |
| Control Type | Touch |
| Material | Plastic, Silicone |
| Weight | 70.5 Grams |
| Frequency Response | 20 Hz |
| Sensitivity | 150 dB |
| Impedance | 180 Ohm |
| Compatible Devices | Laptops, Smartphones, Tablets |
Warranty and Support
Sobast products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please refer to the contact information provided on the product packaging or visit the official Sobast website. Please retain your proof of purchase for warranty claims.
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