Bluetooth 5.0 FM Transmitter & Dual USB Car Charger – Hands-Free Calling and MP3 Player

Add Bluetooth Audio To Your Car Stereo

Upgrade a compatible vehicle audio system without replacing the original radio. This compact Bluetooth 5.0 FM transmitter connects your smartphone to the car stereo through an available FM frequency, allowing you to stream music and hear phone calls through the vehicle’s speakers.

Stream Music Through Your Car Radio

Pair a compatible smartphone, tablet or other Bluetooth-enabled device and select an unused FM frequency between 87.5 and 108.0MHz. Match the frequency on your car radio to play music wirelessly through the existing sound system.

The transmitter can automatically reconnect to a previously paired device after it is powered on, helping make everyday journeys more convenient.

Hands-Free Bluetooth Calling

A built-in microphone allows you to answer, end, reject and redial compatible phone calls using the transmitter’s control button. The supplier lists echo-cancellation and noise-suppression technology to help improve voice clarity while driving.

Call quality may vary according to the vehicle interior, mobile signal, FM interference and microphone position.

Dual USB Charging Ports

Charge two compatible devices while driving using the two USB outputs. The supplier lists one port at 5V/3.1A and another at 5V/1A, allowing phones, navigation devices and other USB-powered accessories to be connected.

No named fast-charging protocol—such as USB Power Delivery or Qualcomm Quick Charge—is confirmed. Charging speed depends on the connected device, cable and available output.

Play Music From A USB Flash Drive

In addition to Bluetooth streaming, the transmitter supports MP3 playback from a compatible USB flash drive with a supplier-listed capacity of up to 32GB. This provides a practical music option when a phone or mobile-data connection is unavailable.

Vehicle Voltage Display

The integrated voltage display provides a convenient view of the vehicle’s electrical voltage while the transmitter is connected. It can offer a general reference, but it should not replace professional battery or charging-system testing.

Compact Plug-In Design

Measuring approximately 47 × 34 × 79mm and weighing only 30g, the transmitter fits directly into a compatible vehicle power socket without permanent installation.

Key Features

• Bluetooth 5.0 wireless connectivity
• Streams phone audio through a car FM radio
• FM frequency range from 87.5 to 108.0MHz
• Built-in microphone for hands-free calls
• Answer, reject, end and redial controls
• Automatic reconnection to a previously paired device
• Dual USB charging ports
• Supplier-listed 5V/3.1A and 5V/1A USB outputs
• USB flash-drive MP3 playback
• Supports USB drives up to 32GB
• Vehicle voltage display
• Compact ABS construction
• Overvoltage and overcurrent protection
• Short-circuit and temperature protection
• CE and RoHS certified

How It Works

Phone or USB Flash Drive → FM Transmitter → Selected FM Frequency → Car Stereo Speakers

The product adds Bluetooth audio through an FM radio signal. It does not install Bluetooth directly into the vehicle’s original stereo system.

How To Connect Bluetooth Audio

1. Insert the transmitter into a compatible vehicle power socket.
2. Turn on the vehicle or accessory power.
3. Select an unused FM frequency on the transmitter.
4. Tune the car radio to the same frequency.
5. Enable Bluetooth on your smartphone.
6. Find and select the transmitter from the available Bluetooth devices.
7. Begin playing music after pairing is complete.
8. Adjust the phone, transmitter and car-stereo volume for comfortable playback.

For clearer sound, choose a frequency without an active local radio station.

How To Play Music From A USB Drive

1. Save compatible audio files to a USB flash drive.
2. Keep the drive capacity within the listed 32GB maximum.
3. Insert the drive into the USB port intended for music playback.
4. Allow the transmitter to detect the stored audio files.
5. Use the available controls to manage playback.

Confirm which USB port supports flash-drive playback before publishing the listing.

Product Specifications

• Product Type: Bluetooth FM Transmitter and Car Charger
• Bluetooth Version: Bluetooth 5.0
• Wireless Function: Bluetooth Audio Reception
• FM Frequency Range: 87.5–108.0MHz
• Call Function: Hands-Free Calling
• Microphone: Built-In
• Music Sources: Bluetooth Device and USB Flash Drive
• Maximum USB Drive Capacity: Supplier-Listed Up To 32GB
• USB Ports: 2
• Listed USB Outputs: 5V/3.1A and 5V/1A
• Voltage Display: Yes
• Material: ABS
• Dimensions: Approximately 47 × 34 × 79mm
• Weight: Approximately 30g
• Protection Features: Overvoltage, Overcurrent, Short-Circuit and Temperature Protection
• Certifications: CE and RoHS
• Installation: Compatible Vehicle Power Socket
• Colour: Not Specified
• Retail Packaging: Supplier States No Retail Box

Compatible Devices

The transmitter is designed to work with compatible Bluetooth-enabled devices, including:

• iPhone and Android smartphones
• Tablets
• Bluetooth-enabled music players
• Compatible navigation devices
• USB-powered mobile accessories
• USB flash drives for supported audio playback

Compatibility depends on the device, charging requirements, Bluetooth profile and vehicle audio system.

Tips For Clearer FM Audio

• Select a frequency that is not used by a local radio station.
• Set the car radio and transmitter to exactly the same frequency.
• Keep the smartphone reasonably close to the transmitter.
• Increase the phone volume before fine-tuning the car-stereo volume.
• Try another unused frequency if static or interference occurs.
• Keep charging and audio cables organized to reduce distractions.
• Confirm that the transmitter is seated firmly in the power socket.

Important Usage And Safety Information

Install and operate the transmitter without obstructing the gear selector, dashboard controls or safe vehicle operation. Configure Bluetooth and the FM frequency before driving whenever possible.

The voltage display provides general information only and is not a calibrated diagnostic tool. Consult a qualified technician if the vehicle shows charging problems, warning lights or unusual voltage readings.

The 5V/3.1A output should not be described as supporting Quick Charge, USB Power Delivery or another proprietary fast-charging standard unless confirmed by the manufacturer.

Frequently Asked Questions

What Does A Bluetooth FM Transmitter Do?

It receives audio wirelessly from a compatible Bluetooth device and broadcasts it over a selected FM frequency. The vehicle radio plays the audio when tuned to the same frequency.

Will It Work With A Car Without Bluetooth?

Yes, provided the vehicle has a compatible power socket and an FM radio covering the listed frequency range.

Can It Play Music From A Phone?

Yes. Pair a compatible phone through Bluetooth and tune the transmitter and car radio to the same unused FM frequency.

Does It Support Hands-Free Calls?

Yes. The supplier lists a built-in microphone and controls for answering, rejecting, ending and redialling compatible calls.

Can It Charge Two Devices Simultaneously?

The transmitter includes two USB ports and is marketed for simultaneous charging. Actual charging speed may decrease when both ports are used.

Does It Support Fast Charging?

One USB output is listed at 5V/3.1A, but no specific rapid-charging protocol is confirmed. It should not be marketed as Quick Charge or USB Power Delivery compatible without verification.

Can It Play Music From A USB Flash Drive?

Yes. The supplier lists USB flash-drive MP3 playback with drives up to 32GB.

What FM Frequencies Does It Support?

The listed transmission range is 87.5–108.0MHz.

Does The Voltage Display Diagnose Battery Problems?

No. It provides a convenient voltage reference but cannot replace professional testing of the battery, alternator or charging system.

Will It Work In A 24V Vehicle?

The supported input-voltage range is not provided. Confirm 12V and 24V compatibility before advertising it for trucks or other 24V vehicles.