Introduction
Thank you for choosing the Ko-Star K80 Wireless Earbuds. These earbuds are designed to provide a high-quality audio experience with advanced features for convenience and comfort. Please read this manual carefully to ensure proper use and maintenance of your device.

Image: The Ko-Star K80 Wireless Earbuds in their open charging case, showcasing the earbuds and the digital display.
Key Features
- Advanced Bluetooth 5.3: Ensures fast, stable, and efficient wireless connection with minimal audio-video sync delay.
- Rich and Balanced Sound: Equipped with 10mm drivers for crisp audio and full-bodied sound.
- Clear Communications: Features dual microphones and a voice-detecting accelerometer for crystal-clear calls.
- Intuitive Touch Control: Easily manage calls, music playback, and voice assistant functions with simple touch gestures.
- Long Battery Life: Up to 8 hours of playback on a single charge, extended to 42 hours with the compact charging case.
- Ergonomic Design: Lightweight (3.5g per earbud) and semi-in-ear design for a stable and comfortable fit.
- Water Resistant: IPX5 protection class guards against sweat and splashing water, suitable for sports and exercise.
Setup and Pairing
First-Time Pairing
- 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), go to Bluetooth settings.
- Search for available devices and select "KO-STAR K80" from the list.
- Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.
Automatic Reconnection
After the initial successful connection, simply open the charging case, and the earbuds will automatically power on and connect with your previously paired device.
Image: A smartphone displaying Bluetooth settings next to the open Ko-Star K80 charging case, illustrating the one-step pairing process and wide compatibility with various devices.
Device Compatibility
The Ko-Star K80 earbuds are widely compatible with iOS, Android, and Windows systems, including smartphones, tablets, desktops, and laptops. Bluetooth 5.3 ensures a stable connection up to 10 meters.
Video: An official product video demonstrating the features and usage of the Ko-Star K80 Wireless Bluetooth Earbuds.
Operating Instructions
Touch Controls
The Ko-Star K80 earbuds feature intuitive touch controls on each earbud for easy management of audio and calls.
| Action | Left Earbud (L) | Right Earbud (R) |
|---|---|---|
| Play/Pause Music | Short press once | |
| Next Song | N/A | Double-click |
| Previous Song | Double-click | N/A |
| Answer/Hang Up Call | Short press once | |
| Reject Call | Long press | |
| Activate Voice Assistant | Long press for 3 seconds | |
Image: A visual representation of the touch control functions on the Ko-Star K80 earbuds, including play/pause, track skipping, call management, and voice assistant activation.
Maintenance and Charging
Charging the Earbuds and Case
The Ko-Star K80 charging case has a 500mAh capacity, providing extended playtime for your earbuds.
- Earbud Charging: Place the earbuds into the charging case. They will automatically begin charging.
- Case Charging (Wired): Connect the provided Type-C cable to the charging port on the case and to a USB power source.
- Case Charging (Wireless): Place the charging case on a compatible wireless charging pad.
Image: An illustration highlighting the 42-hour total playtime with the charging case, showing 7 hours on a single charge and 3 hours fast charging for earbuds.
Battery Indicators
The charging case features a built-in dual LED power display, allowing you to monitor the remaining power of the charging box and the charging status of each earbud in real-time.
Image: A close-up of the Ko-Star K80 charging case's digital power display, showing separate battery levels for the left and right earbuds and the overall case charge.
Water Resistance
The K80 earbuds are rated IPX5 water resistant, meaning they are protected against sweat and splashing water. This makes them suitable for workouts and outdoor activities. Note: The charging case is not water resistant.
Image: The Ko-Star K80 earbuds resting on a surface with water droplets, illustrating their IPX5 water-resistant feature.
Troubleshooting
If you encounter any issues with your Ko-Star K80 earbuds, please refer to the following common solutions:
- No Sound/Connection Issues:
- Ensure both earbuds are charged.
- Turn off and on your device's Bluetooth.
- Forget "KO-STAR K80" from your device's Bluetooth list and re-pair.
- Place earbuds back in the case, close, wait a few seconds, then open and try again.
- Only One Earbud Working:
- Ensure both earbuds are charged.
- Place both earbuds back into the charging case, close the lid, and then open it again to allow them to re-sync.
- If the issue persists, try resetting the earbuds (refer to product support for specific reset instructions if not covered here).
- Earbuds Not Charging:
- Ensure the charging cable is securely connected to both the case and the power source.
- Check if the charging contacts on the earbuds and inside the case are clean and free of debris.
- Try a different charging cable or power adapter.
For further assistance, please contact Ko-Star customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Name | K80 |
| Brand | Ko-Star |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Wireless Range | 10 Meters |
| Ear Placement | In Ear (Semi-In Ear Shape) |
| Driver Size | 10mm |
| Earbud Weight | 3.5g (one earbud) |
| Earbud Battery Life | 8 Hours |
| Charging Case Battery Life | 42 Hours (total with recharges) |
| Charging Time | 1 Hour (earbuds) |
| Charging Interface | Type-C, Wireless Charging |
| Water Resistance Level | IPX5 (Earbuds only) |
| Control Method | Touch Control, Voice Control |
| Frequency Range | 20 Hz - 20,000 Hz |
| Impedance | 80 Ohm |
| Package Dimensions | 3.9 x 3.43 x 1.5 inches |
| Item Weight | 2.89 ounces |
Warranty and Support
Ko-Star products are manufactured with high-quality standards. For information regarding warranty coverage, returns, or technical support, please refer to the product packaging or visit the official Ko-Star website. You may also contact the seller directly through the platform where you purchased the product.
For the latest updates and additional resources, please visit the Ko-Star Store on Amazon.





