Introduction
The JOYROOM JR-CL16 is a versatile car accessory designed to enhance your in-car audio and charging experience. This device functions as a Bluetooth FM transmitter, allowing you to stream music and make hands-free calls through your car's stereo system. It also features dual fast-charging ports, including USB-C PD and USB-A QC3.0, to quickly charge your mobile devices. The smart LED display provides essential information such as car battery voltage and FM frequency. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance.
Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in injury or damage to the device.
- Battery Safety: Keep the device away from excessive heat and humidity. Do not short-circuit the device. Dispose of batteries (if applicable, though this device is car-powered) according to local regulations.
- Interference: This device may interfere with other wireless devices. Follow the instructions in this manual to minimize potential interference.
- Driving Safety: Do not operate the device in a manner that distracts you from driving. Only use hands-free functions when it is safe and permitted by local traffic laws.
- Power Source: Ensure the device is connected to a compatible 12V-24V car cigarette lighter socket.
Package Contents
Verify that all items are present in the package:
- 1 × JOYROOM JR-CL16 48W Wireless FM Transmitter Car Charger
Product Overview
Familiarize yourself with the components of your JR-CL16 FM Transmitter.

Image: Front view of the JOYROOM JR-CL16 FM Transmitter, showing the LED display, multi-function knob, call button, USB-C PD port, USB-A QC3.0 port, and a standard USB port for U-disk playback.
The device features a smart LED display, a multi-function knob for volume and frequency adjustment, a dedicated call button, and multiple charging ports for convenience.
Setup Instructions
- Insert into Car Socket: Plug the JR-CL16 FM Transmitter into your car's cigarette lighter socket. The device will power on automatically, and the LED display will light up.
- Tune FM Frequency:
- Find an empty FM frequency on your car radio (a frequency with no active broadcast).
- Adjust the FM frequency on the JR-CL16 to match your car radio's frequency. To do this, press and hold the multi-function knob until the FM frequency on the display flashes. Rotate the knob left or right to change the frequency. Press the knob again to confirm.
- Bluetooth Pairing:
- On your mobile device, enable Bluetooth and search for available devices.
- Select "JR-CL16" from the list to pair. Once paired, the device will confirm the connection.

Image: Diagram illustrating the Bluetooth 5.0 connection process, highlighting faster and more stable pairing with automatic connection.
Operating Instructions
Music Playback
The JR-CL16 supports three music playing modes:
- Bluetooth Streaming: After successful Bluetooth pairing, open your music player on your mobile device. Audio will be transmitted wirelessly to your car stereo via the selected FM frequency.
- USB Flash Drive (U-Disk) Playback: Insert a USB flash drive (up to 64GB) containing MP3/WMA/WAV/FLAC files into the dedicated USB port (not the charging ports). The device will automatically detect and play music from the U-disk.
- AUX Cable Playback: Connect your audio device to the JR-CL16 using a 3.5mm AUX cable. The device will switch to AUX mode for audio transmission.

Image: Visual representation of the three music playback options: USB flash drive, AUX cable, and Bluetooth 5.0, showing the respective connection points on the device.
Controlling Music:
- Volume Adjustment: Rotate the multi-function knob to adjust the volume.
- Play/Pause: Short press the multi-function knob.
- Next Track: Rotate the multi-function knob clockwise and hold.
- Previous Track: Rotate the multi-function knob counter-clockwise and hold.
- Bass Boost: Press the "B" button (Bass) to activate or deactivate enhanced bass.

Image: The JR-CL16 FM Transmitter with an emphasis on its Deep BASS and Hi-Fi Stereo sound capabilities, indicating CD-level audio quality.
Hands-Free Calling
The built-in microphone with CVC noise cancellation ensures clear and safe hands-free calls.
- Answer Call: Short press the call button (green phone icon).
- Reject Call: Long press the call button.
- Hang Up: Short press the call button during a call.
- Redial Last Number: Double press the call button.

Image: A driver using the JR-CL16 for a hands-free call, demonstrating the clear and stable calling feature with CVC Noise Cancellation. The image also shows controls for volume, answering, rejecting, and hanging up calls.

Image: A detailed view of the JR-CL16's enhanced dual microphones, designed to provide 10 times clearer call quality compared to previous versions.
Charging Devices
The JR-CL16 is equipped with two fast-charging ports:
- USB-C PD 30W Port: For fast charging compatible USB-C devices.
- USB-A QC3.0 18W Port: For fast charging compatible USB-A devices.
You can charge two devices simultaneously with a total output of 48W.

Image: The JR-CL16 connected to a car's power outlet, simultaneously charging an iPhone 13 Pro via PD30W and a Samsung S22 via QC18W, demonstrating its 48W super fast charging capability.
Voice Assistant
Activate your phone's voice assistant (Siri or Google Assistant) directly through the JR-CL16 by long-pressing the call button when not on a call.
Maintenance
- Keep the device clean by wiping it with a soft, dry cloth.
- Avoid exposing the device to extreme temperatures, direct sunlight, or moisture.
- Do not attempt to disassemble or repair the device yourself. Contact customer support for assistance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/LED display off | Loose connection; car socket issue; blown fuse in car. | Ensure the device is firmly plugged in. Check if the car's cigarette lighter socket is working. Consult a car technician if necessary. |
| Poor audio quality/static | FM frequency interference; volume too low; Bluetooth not properly connected. | Change to a different, clear FM frequency on both the device and car radio. Increase volume on both the device and car stereo. Re-pair Bluetooth. |
| Cannot pair via Bluetooth | Bluetooth not enabled on phone; device not in pairing mode; too many paired devices. | Ensure Bluetooth is on and visible on your phone. Restart the JR-CL16. Forget previous Bluetooth connections on your phone and try again. |
| Fast charging not working | Cable not compatible; device not supporting fast charging; incorrect port used. | Use a high-quality, fast-charging compatible cable. Ensure your device supports PD or QC3.0. Use the correct USB-C PD or USB-A QC3.0 port. |
Specifications
| Feature | Detail |
|---|---|
| Brand | JOYROOM |
| Model Name | JR-CL16 |
| Connectivity Technology | USB, Bluetooth |
| Wireless Standard | Bluetooth 5.0 |
| Power Source | Car Cigarette Lighter (12V-24V) |
| Material | Plastic, Acrylic |
| Product Dimensions (L x W x H) | 10 x 5 x 1.3 cm |
| Color | Black (Note: Product title mentions Silver, but specifications indicate Black) |
| Compatible Devices | Car Stereo System, Mobile Phones |
| Special Features | USB-C PD Port, Hands-Free Calling, Voice Assistant Support, LED Display, Bass Boost |
| Media Type Support | USB Flash Drive (MP3, WMA, WAV, FLAC), Bluetooth Audio, AUX Input |
| Charging Output | USB-C PD 30W, USB-A QC3.0 18W (Total 48W) |
| Audio Output Type | FM Radio, Bluetooth |
| Audio Input | 3.5mm AUX |
| Control Method | Touch (Multi-function knob) |
| Supported Applications | Spotify, YouTube, MP3, AAC, etc. |
| GTIN (UPC/EAN) | 06941237199652 |
Warranty and Support
Warranty: The product description indicates "No Warranty". Please refer to your point of purchase for specific return or exchange policies.
Customer Support: For any questions, issues, or technical assistance, please contact the retailer or JOYROOM customer service through their official website or contact channels. Keep your purchase receipt for any warranty claims or support inquiries.







