Introduction
The cellularline Seek earbuds are compact, in-ear Bluetooth headphones designed for a balanced audio experience. Featuring Bluetooth 5.0 connectivity, a portable charging case with an LED display, and touch controls, these earbuds offer convenience and up to 15 hours of total playtime.
This manual provides essential information for setting up, operating, maintaining, and troubleshooting your cellularline Seek earbuds.
Package Contents
- cellularline Seek Bluetooth Earbuds
- Charging Case
- USB-C Charging Cable
Product Overview



Setup
1. Initial Charging
Before first use, fully charge the earbuds and the charging case. Connect the provided USB-C cable to the charging port on the case and to a compatible USB power source. The LED display on the case will show the charging progress and remaining battery percentage.
- Charging Time: Approximately 1.5 hours for a full charge.
- Earbud Playtime (Single Charge): Up to 3 hours.
- Total Playtime with Charging Case: Up to 15 hours (case provides up to 4 full charges for the earbuds).

2. Pairing with a Device
- Ensure the earbuds are charged and placed inside the charging case.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), go to the Bluetooth settings.
- Search for available devices and select "cellularline Seek" from the list.
- Once connected, you will hear an audible confirmation, and the earbuds will be ready for use.

Operating Instructions
Touch Controls
The cellularline Seek earbuds feature intuitive touch controls for managing calls, music playback, and volume directly from the earbuds, eliminating the need to access your connected device.
- Play/Pause Music: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double 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: Triple tap on either earbud (functionality depends on device).
- Volume Control: Specific gestures for volume control may vary. Refer to your device's settings or experiment with long presses on left/right earbuds if not explicitly defined.
Wearing the Earbuds
The capsule shape of the Seek earbuds is designed for optimal comfort and stability. Insert each earbud gently into your ear canal and rotate slightly to find a secure and comfortable fit. A proper fit ensures the best audio quality, including rich and deep bass.

Maintenance
Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, solvents, or aerosol sprays.
- Ensure charging contacts on both earbuds and case are clean and free of debris for optimal charging.
Storage
- When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Store the device in a cool, dry place, away from extreme temperatures and direct sunlight.
Water Resistance
The cellularline Seek earbuds are not water resistant. Avoid exposure to water, moisture, rain, or sweat to prevent damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds not pairing | Earbuds not in pairing mode, low battery, or previously paired device interference. | Ensure earbuds are charged and case is open. Turn off Bluetooth on other nearby devices. Forget the device in your phone's Bluetooth settings and try pairing again. |
| No sound or low volume | Volume too low on device/earbuds, improper fit, or earbud blockage. | Increase volume on both your device and the earbuds. Adjust earbuds for a secure fit. Clean any debris from the earbud speakers. |
| Intermittent connection/disconnections | Distance from device, interference, or low earbud battery. | Keep earbuds within 10 meters of your device. Avoid environments with strong Wi-Fi or other Bluetooth signals. Ensure earbuds are sufficiently charged. |
| Charging case LED not working or charging slowly | Faulty cable, power source, or dirty charging port. | Try a different USB-C cable and power adapter. Ensure the charging port on the case is clean and free of debris. |
Specifications
- Brand: cellularline
- Model Name: BTSEEKTWSK
- Color: Black
- Ear Placement: In-Ear
- Form Factor: In-Ear
- Noise Control: Sound Isolation
- Connectivity Technology: Wireless (Bluetooth)
- Bluetooth Version: 5.0
- Bluetooth Range: 10 meters
- Control Type: Call Control (Touch)
- Audio Driver Type: Dynamic Driver
- Frequency Response: 20 Hz - 20,000 Hz
- Battery Charge Time: 1.5 Hours
- Average Battery Life (Earbuds): 3 Hours
- Total Playtime (with Charging Case): 15 Hours
- Weight: 40 Grams
- Material: Plastic
- Water Resistance Level: Not water resistant
- Compatible Devices: Phones, Tablets, Laptops, Computers
Warranty Information
This cellularline product comes with a 2-year product warranty. Additionally, spare parts availability in the EU is guaranteed for 2 years. Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, refer to the documentation provided with your product or visit the official cellularline website.
Support
For further assistance, technical support, or to explore other cellularline products, please visit the official cellularline store or contact customer service.
Official cellularline Store: Visit the cellularline Store