1. Introduction
This user manual provides comprehensive instructions for the Coby Folding Metal Bluetooth Headphones, model CHBT808BK. Please read this manual carefully before using the product to ensure proper operation and to maximize your listening experience. Keep this manual for future reference.
2. Safety Information
- Volume Control: Avoid prolonged listening at high volume levels to prevent hearing damage.
- Driving Safety: Do not use headphones while driving, cycling, or operating machinery where the inability to hear ambient sounds could pose a danger.
- Cleaning: Clean the headphones with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Disposal: Dispose of the product and its battery responsibly according to local regulations.
- Temperature: Do not expose the headphones to extreme temperatures or direct sunlight for extended periods.
3. Package Contents
Verify that all items are present in the package:
- Coby Folding Metal Bluetooth Headphones (Model CHBT808BK)
- USB Charging Cable
- 3.5mm AUX Audio Cable

Image: Retail packaging for Coby Folding Metal Bluetooth Headphones.
4. Product Overview
Familiarize yourself with the various components and controls of your headphones.

Image: Detailed diagram illustrating the headphone components including the power button, volume controls, play/pause button, AUX-in port, TF card input, and foldable headband.
- Power Button: Used to turn the headphones on/off and for Bluetooth pairing.
- Volume Control (+/-): Adjusts audio volume.
- Play/Pause/Call Button: Controls music playback and manages phone calls.
- AUX-in Port: For wired audio connection using the 3.5mm cable.
- TF Card Input: Slot for playing music directly from a TF (MicroSD) card.
- USB Port: For charging the headphones and potentially for media playback (check device compatibility).
- Microphone: For hands-free calling.
- LED Indicator: Shows power, charging, and pairing status.
5. Setup
5.1. Charging the Headphones
- Connect the small end of the USB charging cable to the USB port on the headphones.
- Connect the larger end of the USB charging cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will illuminate during charging and change color or turn off when fully charged.
- A full charge takes approximately 2 hours.
5.2. Power On/Off
- To Power On: Press and hold the Power button for approximately 3 seconds until the LED indicator lights up.
- To Power Off: Press and hold the Power button for approximately 3 seconds until the LED indicator turns off.
5.3. Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the Power button for approximately 5-7 seconds until the LED indicator flashes blue and red alternately, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "Coby CHBT808BK" (or similar name) from the list of found devices.
- Once paired, the LED indicator will flash blue slowly, and you may hear an audible confirmation.
5.4. Wired Connection (AUX)
To use the headphones with a wired connection:
- Connect one end of the 3.5mm AUX audio cable to the AUX-in port on the headphones.
- Connect the other end of the 3.5mm AUX audio cable to the audio output jack of your device.
- The headphones will automatically switch to wired mode. Bluetooth functionality will be disabled.
5.5. TF Card Usage
To play music directly from a TF (MicroSD) card:
- Insert a TF card (with music files) into the TF card input slot on the headphones.
- The headphones will automatically detect the card and begin playing music.
- Use the Play/Pause and Volume buttons to control playback.
6. Operating Instructions
6.1. Music Playback
- Play/Pause: Press the Play/Pause button once.
- Next Track: Press and hold the Volume Up (+) button.
- Previous Track: Press and hold the Volume Down (-) button.
- Volume Up: Press the Volume Up (+) button briefly.
- Volume Down: Press the Volume Down (-) button briefly.
6.2. Call Management
- Answer Call: Press the Play/Pause/Call button once when a call comes in.
- End Call: Press the Play/Pause/Call button once during a call.
- Reject Call: Press and hold the Play/Pause/Call button for approximately 2 seconds when a call comes in.
- Redial Last Number: Double-press the Play/Pause/Call button.
6.3. Folding Mechanism
The headphones feature a foldable design for easy storage and portability.
- Gently rotate the earcups inwards towards the headband.
- Fold the earcups flat against the headband.
- Ensure the headphones are folded compactly before storing them in a bag or case.

Image: The Coby headphones demonstrating their compact foldable design for travel and storage.
7. Maintenance
- Cleaning: Wipe the headphones with a soft, dry, lint-free cloth. Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Storage: When not in use, store the headphones in a cool, dry place, away from direct sunlight and extreme temperatures. Use the folding feature to save space.
- Battery Care: To prolong battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not in use for extended periods.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot pair with device. | Headphones not in pairing mode; Bluetooth disabled on device; device too far. | Ensure headphones are in pairing mode (flashing blue/red). Enable Bluetooth on your device. Move device closer to headphones (within 10 meters). |
| No sound. | Volume too low; incorrect input mode; device not playing audio. | Increase headphone and device volume. Ensure correct mode (Bluetooth, AUX, TF card). Check if audio is playing on your device. |
| Poor audio quality. | Interference; device too far; low battery. | Move away from sources of interference. Ensure device is within range. Charge headphones. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | CHBT808BK |
| Bluetooth Version | 5.3 |
| Bluetooth Range | Up to 10 meters (33 feet) |
| Playtime | Up to 10 hours |
| Charging Time | Approximately 2 hours |
| Driver Diameter | 40mm |
| Frequency Response | 20 Hz - 20 kHz |
| Impedance | 32 Ohm |
| Sensitivity | 100 ± 3dB |
| Connectivity | Bluetooth, 3.5mm AUX, TF Card, USB |
| Special Features | Foldable design, Built-in microphone, Media controls |
| Material | Metal |
10. Warranty and Support
Coby products are designed for reliability and performance. For warranty information or technical support, please refer to the warranty card included with your purchase or visit the official Coby support website. Keep your proof of purchase for warranty claims.
For further assistance, you may visit the Coby store on Amazon: Coby Official Store






