Coby CETW635BK
Coby Active Bluetooth Wireless Noise Cancelling Earbuds User Manual
Model: CETW635BK
Introduction
Thank you for choosing the Coby Active Bluetooth Wireless Noise Cancelling Earbuds. These earbuds are designed to provide a superior audio experience with advanced features such as active noise cancellation, transparency mode, and smart app integration. This manual will guide you through the setup, operation, and maintenance of your new earbuds.

Image: Coby Active Noise Cancelling Earbuds in their charging case, surrounded by a water splash, highlighting their IPX7 waterproof rating. Various ear tip sizes are displayed below the case.
What's in the Box
Ensure all items are present before proceeding:
- Coby Active Bluetooth Wireless Noise Cancelling Earbuds
- Wireless Charging Case
- USB-C Charging Cable
- User Manual (this document)
- Multiple Sizes of Ear Cushions (S, M, L)
Setup Guide
1. Initial Charging
Before first use, fully charge your earbuds and charging case.
- Place both earbuds into the charging case.
- Connect the provided USB-C charging cable to the charging port on the case and plug the other end into a USB power source.
- The indicator lights on the case will show charging status. A full charge for the case takes approximately 3 hours.

Image: The Coby Active Earbuds and their charging case are shown with a USB-C cable connected, illustrating the fast charging capability.
2. Pairing with Your Device (Bluetooth Auto Pairing)
The earbuds feature seamless Bluetooth auto-pairing for quick connectivity.
- Ensure your earbuds are charged and placed inside the charging case.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your smartphone or other Bluetooth-enabled device, go to the Bluetooth settings.
- Select "Coby Active Earbuds" from the list of available devices.
- Once paired, the earbuds will automatically connect to your device whenever you take them out of the case.
Operating Your Earbuds
Wearing the Earbuds
For optimal sound quality and comfort, choose the ear tips that best fit your ears. The earbuds come with Small, Medium, and Large ear cushions.

Image: A man is shown wearing the Coby Active Earbuds, emphasizing their ergonomic design for a snug and secure fit, ideal for exercise. An illustration highlights the available ear tip sizes (S, M, L).
Touch Controls
The Coby Active Earbuds feature intuitive touch controls on each earbud for easy management of your audio and calls.
- Play/Pause: 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 on either earbud.
- Activate Voice Assistant: Triple tap on either earbud.

Image: A smartphone displays the Coby Smart App, showcasing the earbud tracker feature on a map and options to customize touch controls for play/pause and track skipping.
Noise Control Modes
Switch between different listening modes to suit your environment.
- Active Noise Cancellation (ANC): Blocks out ambient noise for immersive listening. Ideal for travel or noisy environments.
- Transparency Mode: Allows you to hear your surroundings while still enjoying your audio. Useful for awareness in urban areas or conversations.
- Normal Mode: Standard audio experience without noise cancellation or transparency.
You can cycle through these modes using the Coby Smart App or via specific touch controls (refer to the app for customization).

Image: This visual demonstrates the 30dB Active Noise-Canceling and Transparency Mode, showing a woman experiencing tranquility amidst city sounds, with an exploded view of an earbud highlighting its internal components.
Coby Smart App
Enhance your earbud experience by downloading the Coby Smart App. The app offers advanced features:
- Earbud Pinpoint Tracker: Locate your earbuds if misplaced.
- Mode Cycling: Easily switch between Noise-Canceling, Transparency, and Normal Use modes.
- EQ Customizer: Personalize your audio experience with customizable equalizer settings.
Download the app here: Coby Smart App

Image: A user interacts with the Coby Smart App on a smartphone, showing features like earbud tracking, mode selection (Noise Cancellation, Transparency, Normal), and an EQ customizer. A QR code is provided for easy app download.

Image: A woman is shown customizing her audio experience using the Personalized Equalizer feature within the Coby Smart App on her smartphone, with various EQ presets visible.
Battery Life
The Coby Active Earbuds provide extended listening time:
- Up to 8 hours of playtime with Active Noise Cancellation enabled.
- Up to 20 hours of total playtime with the charging case.

Image: The Coby Active Earbuds and their charging case are depicted with a prominent "20 HOUR PLAYTIME" graphic, signifying the combined battery life of the earbuds and the charging case.
Maintenance and Care
To ensure the longevity and optimal performance of your Coby Active Earbuds, follow these care instructions:
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Ear Tips: Remove and clean the ear tips periodically with mild soap and water. Ensure they are completely dry before reattaching.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Water Resistance: The earbuds are IPX7 waterproof, meaning they can withstand immersion in up to 1 meter of water for 30 minutes. While suitable for workouts and light rain, avoid prolonged submersion or use in saltwater. Always ensure the charging port is dry before charging.

Image: A woman is shown relaxing by a pool while wearing the Coby Active Earbuds, emphasizing their IPX7 waterproof rating, making them suitable for splashes and water-related activities.
Troubleshooting
If you encounter issues with your Coby Active Earbuds, try the following solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds not pairing/connecting. | Bluetooth is off on device, earbuds not in pairing mode, or previously paired. |
|
| No sound from one earbud. | Low battery, earbud not properly seated in case, or connection issue. |
|
| Poor sound quality. | Improper fit, dirty ear tips, or interference. |
|
| Touch controls not responding. | Temporary software glitch or dirty sensor. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | Noise Cancelling Earbuds |
| Model Number | CETW635BK |
| Brand | Coby |
| Color | Black |
| Connectivity Technology | Wireless (Bluetooth 5) |
| Bluetooth Range | 10 Meters |
| Noise Control | Active Noise Cancellation |
| Water Resistance Level | IPX7 (Waterproof) |
| Earbud Playtime (ANC on) | Up to 8 Hours |
| Total Playtime (with case) | Up to 20 Hours |
| Charging Case Battery Charging Time | 3 Hours |
| Control Method | App, Media Control (Touch) |
| Material | Silicone (Ear Tips) |
| Item Weight | 1.3 Ounces |
| Package Dimensions | 4.25 x 4.25 x 1.75 inches |
| Manufacturer | Summit Electronics, LLC |
| UPC | 810071493393 |
| Date First Available | December 14, 2023 |
| Country of Origin | China |
Warranty Information
Coby products are designed and manufactured to the highest standards. For specific warranty details and terms, please refer to the warranty card included in your product packaging or visit the official Coby website.
Support and Contact
For further assistance, technical support, or customer service inquiries, please contact Coby customer support through their official website or the contact information provided in your product packaging.
Visit the Coby Store on Amazon: Coby Amazon Store
Product Overview Video
Video: An official product video from Coby providing an overview of the Coby Active Noise Cancelling Wireless Earbuds, highlighting their key features, design, and capabilities.
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