Introduction
Thank you for choosing Coby Sweat-Resistant True Wireless Earbuds, Model CETW527. This manual provides essential information for setting up, operating, and maintaining your earbuds. Please read it thoroughly before use to ensure optimal performance and longevity of your device.
Package Contents
Verify that all items are present in your package:
- Coby True Wireless Earbuds (Left and Right)
- Charging Case
- USB Charging Cable
- User Manual
- Multiple sizes of ear tips
Product Overview
Familiarize yourself with the components of your Coby True Wireless Earbuds.

Image 1: The Coby True Wireless Earbuds shown with their charging case. The earbuds are black and feature an in-ear design, while the charging case is also black with a white interior, displaying charging indicator lights.

Image 2: A close-up view of the charging case highlighting its features. It shows magnetic contacts for secure earbud placement and blue LED battery light indicators on the front of the case, indicating charge level.

Image 3: An illustration demonstrating the seamless touch controls on the earbuds. It shows a finger icon over the earbud's surface, with corresponding actions like Play/Pause, Previous/Next Track, Adjust Volume, and Answer/Reject Calls.
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place the earbuds into the charging case. Ensure they are correctly seated; magnetic contacts will hold them in place.
- Connect the charging case to a power source using the provided USB charging cable.
- The LED indicators on the charging case will illuminate to show the charging status. Once fully charged, the indicators may turn off or show a solid light.
- A full charge provides up to 12 hours of playtime.
2. Bluetooth Pairing
Pair your earbuds with your device for wireless audio.
- Ensure the earbuds are charged and placed in the charging case.
- Open the charging case. The earbuds will automatically enter pairing mode, indicated by flashing LED lights on the earbuds.
- On your smartphone, tablet, or other Bluetooth-enabled device, navigate to the Bluetooth settings.
- Turn on Bluetooth. Your device will scan for available devices.
- Select "CETW527" from the list of available devices.
- Once connected, a voice prompt will confirm successful pairing, and the earbud LEDs will stop flashing.
- The earbuds feature Bluetooth version 5.3 for stable and fast connectivity and will auto-connect to the last paired device when removed from the case.

Image 4: A smartphone screen displaying the Bluetooth settings, showing "CETW527" as a connected device, illustrating the seamless pairing process of the Coby earbuds.
Operating Instructions
1. Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on. Alternatively, press and hold the touch control area on both earbuds for 2-3 seconds.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off and begin charging. Alternatively, press and hold the touch control area on both earbuds for 5 seconds.
2. Music Playback
Use the touch controls on either earbud to manage your audio.
- Play/Pause: Tap the touch control area once on either earbud.
- Next Track: Double-tap the touch control area on the right earbud.
- Previous Track: Double-tap the touch control area on the left earbud.
- Volume Up: Triple-tap the touch control area on the right earbud.
- Volume Down: Triple-tap the touch control area on the left earbud.
3. Call Management
The built-in microphone allows for clear hands-free calls.
- Answer/End Call: Tap the touch control area once on either earbud.
- Reject Call: Press and hold the touch control area on either earbud for 2 seconds.
4. Voice Assistant Support
Activate your device's voice assistant (Siri or Google Assistant) with ease.
- Activate Voice Assistant: Press and hold the touch control area on either earbud for 2 seconds (when not on a call).

Image 5: A person smiling while using their smartphone and wearing the Coby earbuds, indicating the ease of use for voice assistant commands and crystal-clear calls. Icons for Google Assistant and Siri Compatible are also shown.
Maintenance
Proper care ensures the longevity and performance of your earbuds.
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use abrasive cleaners or solvents.
- Ear Tips: Remove and clean the ear tips periodically with a damp cloth. Ensure they are completely dry before reattaching.
- Sweat Resistance: These earbuds are sweat-resistant. After intense workouts, wipe them dry before placing them back in the charging case to prevent moisture buildup.
- 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 away from extreme temperatures.
- Avoid Water Immersion: While sweat-resistant, the earbuds are not designed for full water immersion. Avoid swimming or showering with them.

Image 6: A person engaged in physical activity, wearing one Coby earbud, illustrating the sweat-resistant design that allows for active use while maintaining connectivity.
Troubleshooting
If you encounter issues, refer to the following common solutions:
| Problem | Solution |
|---|---|
| Earbuds not pairing with device. |
|
| No sound from earbuds. |
|
| Earbuds not charging. |
|
| Voice assistant not responding. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | CETW527 |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Battery Life | Up to 12 Hours |
| Water Resistance Level | Water Repellent (Sweat-Resistant) |
| Noise Control | Sound Isolation |
| Microphone | Built-in, Crystal-Clear Calls |
| Voice Assistant Support | Siri, Google Assistant |
| Control Type | Media Control (Touch) |
| Compatible Devices | Smartphones, Tablets, Laptops, Desktops, Smart Speakers |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Product Dimensions | 1.73 x 1.73 x 0.99 inches |
| Item Weight | 14.4 ounces |
| Frequency Range | 20 Hz - 20,000 Hz |
Warranty and Support
Coby products are designed for reliability and performance. For warranty information or technical support, please refer to the warranty card included in your package or visit the official Coby website. Keep your proof of purchase for any warranty claims.





