Introduction
This manual provides detailed instructions for the proper use and maintenance of your Concord C-600 AUX Bluetooth FM Transmitter Car Kit. Please read this manual thoroughly before operating the device to ensure optimal performance and safety.
The Concord C-600 is a versatile Bluetooth audio receiver designed to bring wireless audio streaming capabilities to your car stereo, home audio system, or any device with a 3.5mm auxiliary input. Simply connect the receiver, pair it with your Bluetooth-enabled device, and enjoy your music wirelessly.
Features
- Designed for use with vehicles, stereo systems, and home audio systems.
- Enables wireless music streaming from smartphones, laptops, or tablets.
- Transforms non-Bluetooth audio systems into wireless systems via a 3.5mm Aux input.
- Allows wired headphones to be used wirelessly.
- Bluetooth 3.0 + EDR for reliable connectivity.
- Transmission distance of up to 10 meters.
- Equipped with a 3.5mm input jack.
- Powered by a rechargeable battery, offering up to 5 hours of operating time.
Package Contents
Please verify that all items listed below are included in your package:
- Concord C-600 Bluetooth FM Transmitter
- USB Charging Cable
- 3.5mm Male-to-Male Audio Adapter

Image: The Concord C-600 Bluetooth FM Transmitter, along with its USB charging cable and 3.5mm male-to-male audio adapter, laid out on a white surface.

Image: Another view of the Concord C-600 Bluetooth FM Transmitter, USB charging cable, and 3.5mm audio adapter, showing the components from a slightly different perspective.
Setup
- Charge the Device: Before initial use, fully charge the Concord C-600. Connect the micro USB end of the provided USB cable to the charging port on the transmitter and the standard USB-A end to a suitable power source (e.g., car charger, computer USB port). The indicator light will show charging status and turn off or change color when fully charged.
- Connect to Audio System: Plug one end of the 3.5mm male-to-male audio adapter into the 3.5mm AUX input of your car stereo or home audio system. Then, connect the Concord C-600 transmitter to the other end of the 3.5mm adapter. Ensure the connection is secure.
- Power On: Press and hold the power button on the Concord C-600 for a few seconds until the indicator light begins to flash, indicating that the device is powered on and in Bluetooth pairing mode.
- Pair with Bluetooth Device: On your smartphone, tablet, or other Bluetooth-enabled device, navigate to the Bluetooth settings. Search for available devices and select "Concord C-600" (or a similar name) from the list to initiate pairing. Once successfully paired, the indicator light on the transmitter will typically become solid.

Image: The Concord C-600 transmitter with the 3.5mm male-to-male audio adapter securely inserted into its auxiliary port, ready for connection to an audio system.
Operating Instructions
Playing Music
Once the Concord C-600 is successfully paired with your Bluetooth device and connected to your audio system:
- Open your preferred music application on your Bluetooth device.
- Start playing audio. The sound will be transmitted wirelessly from your device to the Concord C-600 and then through your car stereo or home audio system.
- Adjust the volume directly from your Bluetooth device or your car stereo/audio system.
Power Off
To turn off the Concord C-600, press and hold the power button for a few seconds until the indicator light turns off.
Charging the Device
The Concord C-600 features a built-in rechargeable battery. When the battery level is low, the indicator light may flash or change color to alert you. To charge the device:
- Connect the micro USB end of the supplied USB cable to the charging port on the Concord C-600.
- Connect the standard USB-A end of the cable to a powered USB port (e.g., car USB charger, computer USB port, wall adapter).
- The indicator light will illuminate during charging and typically turn off or change color once charging is complete. A full charge usually takes approximately 1-2 hours and provides up to 5 hours of continuous operating time.
Troubleshooting
No Sound
- Ensure the Concord C-600 is charged and powered on.
- Verify that the 3.5mm AUX connection to your audio system is secure and fully inserted.
- Check that your car stereo or home audio system's input source is set to AUX.
- Confirm that the Concord C-600 is successfully paired with your Bluetooth audio source.
- Adjust the volume levels on both your Bluetooth device and your audio system.
Cannot Pair
- Make sure the Concord C-600 is in pairing mode (indicator light flashing).
- Ensure Bluetooth is enabled on your smartphone, tablet, or laptop.
- Move your Bluetooth device closer to the transmitter (within the 10-meter range).
- Try turning both the Concord C-600 and your Bluetooth device off and then on again.
- If you have many previously paired devices, try clearing some connections on your Bluetooth device.
Poor Audio Quality
- Ensure there are no significant physical obstructions between the transmitter and your Bluetooth device.
- Move away from sources of strong electromagnetic interference (e.g., other wireless devices, high-power electronics).
- Check the quality of the audio source file or streaming service.
Specifications
| Brand | Concord |
| Model | C-600 |
| Connectivity | Bluetooth 3.0 + EDR |
| Transmission Distance | Up to 10 meters (33 feet) |
| Audio Input | 3.5mm Aux Jack |
| Power Source | Rechargeable Battery (charged via USB) |
| Charging Port | Mini USB |
| Operating Time | Up to 5 hours |
| ASIN | B091FQFVHV |
Maintenance
To ensure the longevity and proper functioning of your Concord C-600, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the device. Do not use harsh chemicals, abrasive cleaners, or solvents, as these can damage the surface and internal components.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Moisture: Keep the device dry. Do not expose it to water, rain, or high humidity, as this can cause electrical damage.
- Handle with Care: Avoid dropping the device or subjecting it to strong impacts.
Warranty and Support
The Concord C-600 AUX Bluetooth FM Transmitter Car Kit comes with a 2-year manufacturer warranty.
For warranty claims, technical support, or any questions regarding your product, please contact Concord customer service or the retailer from whom you purchased the device. Please retain your proof of purchase for warranty validation.