10 Best Wireless FM Transmitter Devices – Uses, Specs, and Prices

A wireless FM transmitter can turn any car into a full entertainment adobe. You can tune into numerous radio stations, listen to your favorite songs, and even enjoy hands-free calling. But as so many products are revolving in the market, it takes time to choose the right one. Instead of selecting a device mindlessly, it is wise to know everything about it.

So, in this article, you will uncover the 10 renowned wireless FM transmitters that can be used in most cars. There’s a guide and a comparison table for each product. You will also learn everything about these devices, from features and specs to pros, cons, and pricing. 

Things to Consider to Choose the Best Wireless FM Transmitter

This is a to-the-point guide to help you pick the ideal wireless FM transmitter that can fulfill your requirements. 

a. Power Functionality

You will find two types of wireless FM transmitters – plug-in and chargeable. The plug-in type is inserted in the cigarette port of your car in order to activate. At the same time, the chargeable transmitters can run up to several hours from a single charge via a USB port. 

The most convenient system among these two is the plug-in Bluetooth transmitter. It takes power from your car’s battery to stay functional. Contrarily, a chargeable device may not fit for long travel hours, but it gives you the option to position them without blocking the gearbox or dashboard.

b. Display and Size

Transmitters come in all shapes and sizes. So don’t get distracted by fancy outlook and design if it will block you from changing gears or turning the steering. Always opt for the device that easily fits your car’s port without blocking your view or handling capabilities.

c. Frequency Range

When looking for an FM transmitter to connect devices wirelessly, it is vital to understand the frequency range the gadget offers. Keep in mind that a good transmitter frequency range is 87.5 MHz to 108 MHz. 

d. Supported Audio Formats

Wireless FM transmitters are also perfect for playing music through SD cards and AUX. However, there are a few brands that only support MP3 files and are not capable of playing heavy and high-quality audio. It is wise to choose a device that can play various audio formats, including WMA and WAV.

e. Compatibility

Although the majority of FM transmitters are compatible with Bluetooth-enabled devices, some of them do not offer a stable function with smartphones or tablets. Therefore, always try to choose a transmitter that ensures pairing with your phone. 

f. Charging Ports

Some transmitters have a single USB port, while others come with a minimal two. Multiple USB ports help you simultaneously charge two devices, such as smartphones and laptops. This feature is helpful because it never lets your phone battery drain. 

Comparison Table – 10 Best Wireless FM Transmitter

ProductPricePower SourceFrequencyAudio Support
GUANDA RM100$29.99Cigarette Port2.402 GHz to 2.48 GHzMP3, FLAC, and WMA
JOYROOM JR-CL18$24.77Cigarette Port76 MHz to 108 MHzMP3, WAV, FLAC, WMA, AAC, APE, MA4, DTS, AC3 and A2DP
Nulaxy KM18$20.99Cigarette Port87.5 MHz to 108 MHzWAV, MP3, and M4P
Lencent T25$14.84Cigarette Port88.1 MHz to 107.9 MHzMP3, APE, WMA, WAV, and FLAC
Imden Bluetooth C57$17.99Cigarette Port88.1 MHz to 107.9 MHzMP3
Roav SmartCharge T2$19.99Cigarette Port2402MHz to 2480 MHzAAC, MP3, FLAC and WAV
Sumind BT70B$25.99Cigarette Port87.5 MHz to 108 MHzWMA and MP3
Syncwire SW-XC725$24.99Cigarette Port87.5 MHz to 108 MHzAAC, MP3, FLAC, and WAV
Avantree CK310$29.99Battery – 7 hours88.1 MHz to 107.9 MHzMP3, AAC, FLAC, WAV, and WMA
Scosche BTFreq Pro$39.99Cigarette Port87.5 MHz to 107.9 MP3

Note: Each product’s price is taken from its official website or Amazon store. The manufacturers keep all the rights to change pricing as per their requirements.

10 Reliable Wireless FM Transmitter in 2023

Here are the 10 best wireless FM transmitters to make your journey entertaining. 


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The GUANDA RM100 is not only a wireless FM transmitter but a 4-in-1 gadget that plays songs, charges your devices, transmits music, and allows hands-free calling. Apart from its modern design, this little system is compatible with various smartphones and tablets for brands like LG, Sony, Samsung, iPhone, iPad, and more.

This Bluetooth car transmitter comes with a 1.8-inches LCD with bright colors that shows essential details. This includes information like FM station, Bluetooth name, device name, song name, volume, playing status, and much more. 

It has a 360-degree rotatable gooseneck that can be fit at the most suitable location around the dashboard. Surprisingly, the RM100 offers 5 Hi-Fi EQ modes with CVC noise suppression and echo-cancellation technology for a great calling experience. 

The GUANDA RM100 comes with two USB ports (5V and QC3.0) to help you charge two devices together without losing speed. Like some of the renowned brands in this list, the RM100 also shows safety configurations, such as over-current protection, short circuit protection, and more to ensure to make sure you charge safely. 

Features and Specifications of GUANDA RM100

  • 5V output voltage
  • 12V to 24V input voltage
  • TF Card slot and AUX port
  • 2.402 GHz to 2.48 GHz frequency range
  • Supports MP3, FLAC, and WMA audio formats
  • One-Click voice navigation and hands-free calling
  • Rock, Pop, Classical, Jazz, and Normal music modes

Pros of GUANDA RM100

  • Fine pricing
  • Very colorful and attractive display
  • Easy to adjust the device due to the flexible gooseneck
  • You can use it with several devices without any interruptions

Cons of GUANDA RM100

  • The size of this gadget is a bit bulky
  • You may get interference in radio signals if you’re driving on a busy road with lots of transmitting devices


  • $29.99


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The JOYROOM JR-CL18 is a Bluetooth wireless FM transmitter ideal for cars without built-in Bluetooth. It is a 12-volt plug-in transmitter that doesn’t need any batteries. Also, turning to some particular radio station is hassle-free. It is equipped with the newest Bluetooth 5.3 chip to provide quick pairing and a highly-stable connection for uninterrupted calls and music.

Something that makes this device more suitable is its robust memory function. It automatically reconnects to the previous device every time you step inside your car. Also, it has an auto-resume function that plays the song from where you left it. You can also connect JR-CL18 to your car through a 3.5mm jack via AUX mode. 

The JOYROOM JR-CL18 has a self-sound optimizing trait that helps transfer well-balanced and high-fidelity audio from your phone or tablet to the car’s audio system. Moreover, it is a perfect FM transmitter for those who love the bass vibe. A single press of the ‘b’ button opens the stereo sound and the deep bass. 

This great device can be easily mounted near the air vent of your car to match the eye level for easy viewing. So there’s no need to look down continuously to monitor the transmitter. In fact, you won’t even find the need to look at the interface to press the buttons since all are big enough to sense. 

And while you’re listening to your favorite channel, you can charge up to 3 devices simultaneously through one Type C, PD 30W Type C and two USB (QC 3.0) ports. So, for instance, if you have Samsung or iPhone models, you can connect them to the PD port for fast charging. Contrarily, the company claims you can charge other Android devices to the QC 3.0 port to recharge from 0 to 60% in only 35 minutes. 

Also, the microphone is equipped with the newest CVC 8.0 noise suppression technology that filters background sounds. Besides, the JR-CL18’s middle button wakes Google Assistant or Siri by pressing it long. 

Features and Specifications of JOYROOM JR CL-18

  • Deep bass
  • Hands-free calling
  • Big-size microphone
  • 3x reading modes
  • 3 ports for fast charging
  • 5V output voltage
  • 12V to 24V input voltage
  • 76 MHz to 108 MHz frequency range
  • Broad audio format support including MP3, WAV, FLAC, WMA, AAC, APE, MA4, DTS, and AC3 along with A2DP

Pros of JOYROOM JR CL-18

  • Clear audio
  • Very attractive RGB display
  • It provides very fast charging

Cons of JOYROOM JR CL-18

  • The FM reception is weak n some cars


  • $24.77

3. Nulaxy KM18

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The Nulaxy KM18 is a cool wireless FM transmitter based on Bluetooth technology. It features a clear 1.44-inch LCD display to show different functionalities, such as FM channels, car battery voltage, music, phone calls and more. According to the manufacturers, the reason behind this small size LCD is to help you drive your car without any distractions. This device has a rotatable gooseneck to adjust this FM transmitter to the best viewing angle to achieve the highest comfort level.

Nulaxy KM18 has Bluetooth V5.0 technology that offers a quicker and more stable connection and ensures minimal disconnections. There’s also an integrated noise-cancellation feature that decreases the surrounding road noise, allowing you to have clear and crisp hands-free calls. Talking about the quality, it is quite impressive to see that this device offers vibrant and clear sounds for music playback as well.

The Nulaxy KM18 also offers an all-in-one button to enable hands-free calling. This makes it easier to switch between music playback and incoming calls and promotes safe driving. And guess what? This FM wireless transmitter is also compatible with a broad range of devices, such as iPod, iPhone, MP3 players, iPhone, Android and all other smartphones. At the same time, it provides you with multiple options to play your music tracks in your car, such as auxiliary cable, SD card, and Bluetooth. The device is also good for use in both 24V and 12V trucks and cars.

Features and Specifications of Nulaxy KM18

  • Built-in voltmeter
  • USB charging port
  • 5 volts outage voltage
  • 12 to 24 volts input voltage
  • 87.5 MHz to 108 MHz frequency range
  • WAV, MP3, and M4P supported audio formats

Pros of Nulaxy KM18

  • Low price
  • The device works with most trucks and cars
  • You can connect it to all Bluetooth systems

Cons of Nulaxy KM18

  • You may hear a choppy or distorted sound quality when signals are weak


  • $20.99

4. Lencent T25

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The Lencent T25 is designed to improve your audio experience while you’re on the wheels. This device has an anti-static construction that makes sure you enjoy the maximum benefits from it. It comes with advanced CVC technology that reduces wind and other noises to deliver a full duplex and exceptional sound quality. With T25, you also get the flexibility to play music through your car audio system via multiple connectivity options. This includes Bluetooth, microSD card (up to 32GB) and USB (Up to 32GB). 

Lencent T25 supports a wide range of music formats, including MP3, APE, WMA, WAV, and FLAC. It has two USB ports (5V-1A and SV-2.4) that let you charge this wireless FM transmitter while you still have it playing your favorite track. When it comes to safety, the T25 is instilled with different mechanisms, including over-voltage protection, over-current protection, short circuit protection, and temperature control. 

Additionally, you can enjoy hands-free calling through its rigid Bluetooth connection. While there’s CVC on board, the device is also equipped with an echo-cancellation system to make sure there’s a transfer of crystal clear voice. What’s better? You can connect this device to your phone’s app and use voice navigation to control functions. This is a great trait that keeps distractions to a minimum.

Features and Specifications of Lencent T25

  • Auto reconnection
  • Display for car battery health
  • DC 5V input and output voltage
  • Blue ambient light for maximum comfort
  • 88.1MHz to 107.9 MHz frequency range
  • Compatibility with most Bluetooth-enabled devices and smartphones

Pros of Lencent T25

  • Inexpensive
  • Dual USB option
  • Noise suppression

Cons of Lencent T25

  • The display is not very bright


  • $14.84

5. Imden Bluetooth C57

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The Imden Bluetooth C57 is a two-port USB wireless FM transmitter with fast charging. Among these ports, one is equipped with the Quick Charge 3.0 technology that permits super fast charging. Other than that, this device also has a hands-free calling function with a high-performance mic that comes with CVC noise-suppressing technology. Also, the one-button trait allows you to answer, end, dismiss, and redial calls with ease.

From an entertainment point of view, the Imden Bluetooth C57 gives you the option to plug and play music right from your USB drive. However, it only supports MP3 files. If compatibility is one of your concerns, you will be glad to know that this device can be connected to all Bluetooth smartphones.

Imden Bluetooth C57 also offers great safety. These characteristics are over-current protection, temperature control, short circuit alert, and over-voltage protection.

Features and Specifications of Imden Bluetooth C57

  • Smart Car Locator
  • Blue LED display
  • Voltage display with voice prompts
  • 88.1 MHz to 107.9 MHz frequency range
  • Announcement for incoming calls numbers

Pros of Imden Bluetooth C57

  • It is affordable
  • There’s a built-in FM tuner
  • The device is very easy to set up

Cons of Imden Bluetooth C57

  • It only supports MP3
  • Some users pointed out interference issues
  • This transmitter is not compatible with all vehicle stereos


  • $17.99

6. Roav SmartCharge T2

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The Roav SmartCharge T2 wireless FM transmitter lets you conveniently tune into various FM frequencies without much effort. It has dedicated buttons on the sides that help you change channels and offers automatic scanning. Equipped with Bluetooth 5.0, the T2 makes a strong and secure connection between your phone and the transmitter itself. This helps you tune in to your favorite music or phone calls without any interruptions.

T2 includes a PowerIQ 3.0 technology so you can swiftly charge your mobile phone, tablet, or any other device that has lightning ports of USB Type-C. However, to use this feature, you will need to have a USB or lightning cable, as they don’t come with this product. 

Moreover, the T2 has built-in noise cancellation technology, and the microphone is also of high quality. This combination helps filter out unwanted sounds coming from the road or wind while you’re on a phone call. While there are not many safety options in this FM transmitter, you still get the 1-button calling. It lets you keep your eyes on the road while you’re on an important call. With a single press of the button, you can pick up the call right away.

Features and Specifications of Roav SmartCharge T2

  • Auto scan
  • High-speed charging
  • Good audio quality
  • Enhanced noise cancellation
  • Strong build
  • Soft LED power display
  • 12V to 24V input voltage
  • 5V output voltage
  • 2402 MHz to 2480 MHz frequency range
  • Supports four audio formats – AAC, MP3, FLAC and WAV

Pros of Roav SmartCharge T2

  • Not an expensive device
  • T2 works with most cars through the cigarette port
  • It is a durable construction to withstand rough usage

Cons of Roav SmartCharge T2

  • Despite the high-frequency range, users are not satisfied with the interference factor


  • $19.99

7. Sumind BT70B

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The Sumind BT70B is equipped with a big key for smooth operation. Besides, it has a 1.7-inch LCD display that not only shows the incoming call number or the song name but even reveals the car’s battery level. You can also rotate the screen to 270 degrees for easy viewing since it has a gooseneck design. And to quickly turn off the device, you can long-press the next song button for at least 5 seconds. 

Sumind BT70B makes a great wireless FM transmitter due to its wide range of options. It has 12-24 volts input and 2 USB port outputs with a smart 2.4 A charging port that quickly identifies whether you have plugged in an iPhone or Android device. And like other products in this list, the BT70B is equipped with a QC 3.0 fast charging port that overcomes the drained battery really fast.

It has a built-in microphone that permits you to have hands-free conversations through calls. To ensure there is no disruption during the call, BT70B comes with noise cancellation technology (CVC) and an advanced interference feature. 

The Sumind BT70B is compatible with iPods, iPhones, Android and all other devices. It has a radio adapter that lets you transfer music to your car’s stereo via a 3.5mm audio cable. When it comes to file support, this transmitter allows MicroSD cards up to 32 GB in FAT format. Plus, you can also play WMA and MP3 audio files. 

Features and Specifications of Sumind BT70B

  • Line out jack
  • Fuse Tube design
  • Multiple device charging
  • 12 volts to 24 volts input voltage
  • Google Assitant and Siri compatible
  • 87.5 MHz to 108 MHz frequency range
  • 3 music playing modes – Bluetooth, SD Card, and AUX

Pros of Sumind BT70B

  • Quick charge of devices
  • Big buttons and display
  • Low noise audio

Cons of Sumind BT70B

  • Many users complained about the Auxilary port not working
  • Not a good view angle – it makes it hard to see from the driving seat
  • Inflexible gooseneck


  • $25.99

8. Syncwire SW-XC725

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The Syncwire SW-XC725 has a beautiful design surrounded by rainbow lights. Though it looks delicate, it is one of the toughest wireless FM transmitters you can get. It has a dedicated ‘B’ button that is enough to perform several functions. For instance, you can turn off the rainbow lights, activate or deactivate stereo audio and deep bass. 

The Syncwire SW-XC725 is equipped with the newest 5.3 Bluetooth technology to ensure there are no transmission delays or connection issues. So you expect a stable, faster, and smarter connection with minimal interruption during playback or calls. Also, the pairing is pretty quick. The company assures that the device requires ‘one second’ to pair. Besides, there’s no need for re-pairing once your phone and transmitter are connected.

The  Syncwire SW-XC725 comes with 2x USB ports (USB A – 12W and PD 36W), allowing you to charge multiple devices at one time. For safety concerns, this wireless transmitter for cars offers over-current, over-voltage, and short-circuit protections along with smart temperature control. 

This device has CVC technology to ensure echo and noise cancellation for a better hands-free experience. The sound quality also seems excellent due to the Hi-Fi sound trait that takes listening to the next level.

Features and Specifications of Syncwire SW-XC725

  • 5V output voltage
  • 12V to 24V input voltage
  • Multiple fast charging ports
  • Supports dual media source
  • 87.5 MHz to 108 MHz frequency range
  • Supported audio formats include AAC, MP3, FLAC, and WAV

Pros of Syncwire SW-XC725

  • Installation is easy
  • This transmitter works with most cars
  • Provides radio stations which are undetectable by built-in car audio systems

Cons of Installation is easy

  • You need to get familiar with the configuration to figure out the features
  • Some users reported that they have to unplug this device to listen to local radio stations from the built-in audio system


  • $24.99

9. Avantree CK310

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If you want a wireless FM transmitter that runs on a battery so you keep the cigarette port available, then Avantree CK310 is the solution. This Bluetooth transmitter has a built-in battery that gives a playtime of 7 hours, allowing you to consume it for calls, music and navigation. 

The CK310 is extremely versatile from the design point of view. You can place it anywhere in your car by just using a small piece of magic tape. Be it windows, dashboard, or anywhere, you can always put it on anything that doesn’t distract your driving.

Moreover, this device comes with automatic power on and off. Also, it is compatible with all wireless-enabled smartphones and cars with FM radio.

Features and Specifications of Avantree CK310

  • LED screen
  • Bluetooth version 4.1
  • HSP, ASDP, HFP, and AVRCP Bluetooth Profiles
  • 88.1 MHz to 107.9 MHz frequency response
  • 370mAH lithium-ion battery
  • 7 hours of talk time
  • 9 hours of music time
  • Supported audio formats include MP3, AAC, FLAC, WAV, and WMA

Pros of Avantree CK310

  • There is no mounting restriction – you can attach it anywhere in your car
  • The auto power option shutdowns and turn on the device whenever you get inside or outside the car

Cons of Avantree CK310

  • The battery life is not sufficient if you are taking a long trip


  • $29.99

10. Scosche BTFreq Pro

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The Scosche BTFreq Pro is a wireless, hands-free FM transmitter that helps you enjoy radio via Bluetooth signals while simultaneously charging your device. The BTFreq Pro is very simple to use. You can plug it into your car’s power outlet, pair it with your smartphone, and begin making calls and streaming music. 

The Scosche BTFreq Pro also has an LCD screen positioned at the front side of this device that shows the battery level and the current FM station you are tuned into. There’s a multi-function button to help you control different functions, such as answering calls, playing tracks, and activating your voice assistants, such as Google, Bixby, and Siri. It also lets you lock and unlock your favorite FM stations. 

Features and Specifications of Scosche BTFreq Pro

  • Built-in swift charger
  • Wireless streaming
  • 12V DC input voltage
  • 5V DC output voltage
  • Compatible with multiple devices, including Android and iOS
  • 87.5 MHz to 107.9 MHz frequency range
  • Bluetooth 5.0
  • HFP hands-free calling
  • A2DP stereo
  • MP3-supported audio format
  • Type A and Type C USB ports

Pros of Scosche BTFreq Pro

  • Simple interface
  • Power Delivery 3.0
  • 3 times faster charging

Cons of Scosche BTFreq Pro

  • Asking too much price for ordinary features
  • The multi-function button creates difficulty in driving
  • This wireless FM transmitter does not support high-quality audio formats such as FLAC and WAV


  • $39.99


A wireless FM transmitter can increase your driving experience by providing entertainment while charging your smartphone without disruptions. You can tune into your favorite radio channel and play songs through microSD cards. Among various brands, the Lencent T25, Nulaxy KM18, Imden C57, and Roav T2 fall into the inexpensive category. 

Contrarily, GUANDA RM100, JOYROOM JR-CL18, Syncwire SW-XC725 are a bit pricey compared to others. Nevertheless, although Scosche BTFreq Pro is the only wireless FM transmitter which is more expensive than all in this list, it doesn’t provide extraordinary features. 

However, all these gadgets use your car’s cigarette port to turn on their functions, except for the Avantree CK310. The CK310 has a built-in chargeable battery with a playtime of up to 7 hours. 


Q1. What is a wireless FM transmitter?

A wireless Fm transmitter is a device used for playing music and receiving or making calls in cars that don’t have Bluetooth connectivity or an AUX input.

Q2. Will a wireless FM transmitter drain my car battery?

Wireless FM transmitters use minimal energy from your car’s battery. Therefore, they don’t drain it completely and are safe to use.

Q3. Can I plug an AUX cable into my wireless FM transmitter?

If your wireless FM transmitter has an AUX jack, you can use an AUX cable to play your music. A few examples of such transmitters are Nulaxy KM18, Sumind BT70B, and GUANDA RM100.


John Doe

John Doe

I am John, a tech enthusiast with a knack for breaking down complex camera, audio, and video technology. My expertise extends to social media and electronic gadgets, and I thrive on making the latest tech trends understandable and exciting for everyone. Sharing my knowledge through engaging content, I aim to connect with fellow tech lovers and novices alike, bringing the fascinating world of technology to life.

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