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Syncwire Bluetooth 5.4 Car Adapter 38W FM Transmitter Hands Free Calls

  • Based on 6,479 reviews
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Availability: In Stock.
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Arrives Tuesday, Oct 27
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Color: Black


Features

  • [PD 3.0 & QC 3.0 Fast Charging] Syncwire bluetooth car FM transmitter support charging two kinds of devices simultaneously---Quick Charge 3. 0 port and Type-C PD 20W ports. The maximum total power can reach 38W, so the charger efficiency is 80% more than normal charger. Synwire can providing you a high-speed and convenient charging experience.
  • [Advanced Bluetooth 5.4 FM Transmitter] Built-in latest Bluetooth 5.4 technology, Syncwire bluetooth car adapter provides a more stable connection for streaming music over FM frequency and making hands-free calls,, allowing for faster pairing with compatible devices, supporting smart voice navigation from your phone, streaming the audio from navigation app/Siri/Google Assistant to your car.
  • [Hi-Fi Deep Bass & Backlit] The exclusive bass-enhancing key-press amplifies the sound quality, making this device truly stand out. Enjoy crystal-clear audio during long rides with your loved ones, while the ambient blue LED backlighting pulses to the rhythm of the music.
  • [Hands-free Calls] The built-in Noise Suppression (CVC) design can reduce external environmental noise well to provide crystal clear for hands-free call. All in one button: answer/reject/hand up/recall enable you seamlessly switch between incoming calls and music.
  • [Wide Compatibility] This car Bluetooth adapter can be used with any Bluetooth device such as iPad, iPhone, iPod, HTC, Galaxy, Sony, MP3 player, tablet and Android Smartphones. And it fits 12V-24V cars and trucks.

Description

ABOUT SYNCWIRE Note: If static interference occurs, try a different frequency and repeat the steps. How to adjust the volume by Bluetooth car adapter? 1. Double Click the Multi-function Button(Calling Button), then the Channel Dispaly will flash. 2. Rotate the knob(left or right) to adjust the volume up or down.

Special Feature: Advanced Bluetooth 5.4 Technology, Fast Charging, Hi-Fi Bass Music, Multi-safety Protection, Support Siri/Google Assistant See more


Brand: SYNCWIRE


Connectivity Technology: Bluetooth


Power Source: Corded Electric


Item Weight: 0.07 kg


Additional Features: Advanced Bluetooth 5.4 Technology, Fast Charging, Hi-Fi Bass Music, Multi-safety Protection, Support Siri/Google Assistant


Color: Black


Supported Media Type: USB, MP3, WAV, WMA, AAC, FLAC


Installation Type: Plug In


Power Source: Corded Electric


Voltage: 7.6 volts_of_direct_current


Compatible Devices: Cellular Phones, MP3 Player, Tablet


Supported Standards: Bluetooth 5.4, AAC, MP3, WMA, FLAC


Compatibility Options: Cellular Phones, MP3 Player, Tablet


Compatible with Vehicle Type: 12V-24V cars and trucks


Supported Application: Music playback, hands-free calling, navigation


Hardware Interface: Bluetooth, USB


Connector Type Used on Cable: Bluetooth, USB


Number of Ports: 2


Audio Output Type: bluetooth


Audio Output Mode: Stereo


Number of Channels: 1


Connectivity Technology: Bluetooth


Wireless Compability: Bluetooth


Item Weight: 0.07 kg


Brand: SYNCWIRE


Model Name: Bluetooth 5.1 FM Transmitter 38W - Fast Car Charging


Global Trade Identification Number: 92


Unit Count: 1 Count


Manufacturer: Syncwire


Warranty Description: 36 Months warranty


Control Type: Touch Control


Control Method: App, Voice


Human Interface Input: Buttons


Controller Type: Google Assistant, HomeKit


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • What a great addition to an old car!
Color: Black
Ok. I admit my visceral reaction to first spotting this adapter was, “huh, that seems a little expensive.” After review and initial use, I’ve changed my mind about that. I am prejudiced about cheap Chinese knockoff products. I expected this to be another. It is not. Fit, finish, and feel are quite high. Functionality and placement are well thought through, especially for such a small footprint/volume. Ultimately I needed it to do what I bought it for — to be a good interface to play music from my phone, not to look fancy. How did it do? These are initial impressions- I’ll update later if warranted after a bit of road use. But for now — setup was effortless. It locked into the vacant channel and between this device and my car's radio the channel went silent of any static. Engine was running - no alternator whine. Bluetooth pairing took 5 seconds. Audio was clear and loud. No hiss/distortion at “too loud” radio volume, so verdict is — success. I was not even looking for or even noticed on Amazon the hands-free phone function and built in microphone. Great feature since holding a device is a no go (legally here and functionally — car has standard transmission). I cannot review that here yet. Having started my driving during “AM Radio and one center dash speaker” days - I’m used to the dance on road trips of stations coming and going. So I’m sure same will be for this system if on the road and a nearing station on the selected frequency gets strong enough to walk on the selected frequency — welcome back to early 2000’s when XM came into existence. Ya just have to pull over and tune a new unused channel once in awhile - no biggie. So far — I’m impressed with this item. Oh! And a three year warranty?!? What product these days comes with the three year warranty??? That’s impressive too. ... show more
Reviewed in the United States on September 27, 2026 by CCW

  • Easy way to play music from your iPhone in an older car without Apple compatibility
Color: Black
My RX8 only has an AM/FM radio with CD & cassette drives, and an option to connect to a mini-disc player which I never purchased. The CDs sounded fairly good, but when I got an iPhone 16 Pro Max I had room enough room to load my entire library of CDs on the iPhone but wanted a better way to play music on the Bose sound system in the car. I bought a Syncwire 5.4 to see if and how I could integrate it into my car's sound system. It turned out to be pretty easy and is easy to use while driving and the price of the Syncwire is very reasonable. I put an attachment on my center console that holds the iPhone 16, plugged the Syncwire into the cigarette lighter and found an unused frequency on the FM channel and selected that channel on the Syncwire. I set one of the FM preset buttons on the Bose to that frequency I'd selected on the Syncwire so that I could listen to other FM station presets on the Bose so I have access to both the Bose and Syncwire by just using the presets, and the CD player still works normally, but I doubt I'll ever use it again. The iPhone and Syncwire connect with Blutooth, the iPhone is in a spring loaded cradle, and can be powered directly from the Syncwire with a short USB-C to USB-C cable to keep the iPhone battery charged, but because the Syncwire runs a little hot I put a second charger in the cigarette lighter socket in the console between the driver and the front passenger seat console and ran a USB-C to USB-C charger cable from the charger to the iPhone. So now I can use the iPhone's Music app to pick the songs or playlists of my choice and play them through the Bose sound system and keep the iPhone charged up on long drives and never listen to the same song twice or repeat songs from the iPhone's screen, easily remove my iPhone and Syncwire when not in use and I am extremely pleased with the results. I bought a spare Syncwire (just in case). [The iPhone in the photo looks larger than it appears because it's closer to the camera lens]. ... show more
Reviewed in the United States on September 3, 2026 by James K

  • Bluetooth Converter
Color: Black
Super easy to install. Works as advertised. Only drawback is it seems a bit delicate, and requiring an installation point that would be free from occasional bumping or interference with other routine dashboard functions
Reviewed in the United States on October 9, 2026 by Barry Collier

  • A very good update for an older Thunderbird!
Color: Black
My 2002 T-Bird now has functioning Bluetooth and access to my iPhone thanks to this little device. The Syncwire was easy to install and link to my phone and is working quite nicely as I had hoped it would. Choosing a proper FM station as described in the tiny instructions. That was critical as one station with even minimal station interference was not optimal. Also, I had originally picked an FM frequency above 101 and it appears the device does not connect to stations above 100...at least my device did not. The directions did not mention that aspect of the process. I do wish the phone and other buttons were on top of the unit: when the device is installed with the screen properly oriented, the buttons are on the underside where they are not readily accessible. Another reason I selected this model was for its visual simplicity. It's simple round design fits in nicely with my vehicle's instrumentation. So far, this was a great choice! ... show more
Reviewed in the United States on July 4, 2026 by Randy

  • WOW, I was surprised by how good this is!
Color: Black
This little device works great and the sound quality is excellent. It auto connects to the phone every time I get in the car. Such a little, simple, device that works very well The ONLY thing that is somewhat annoying is that it has a circle of light, which can be turned off, but it 'pulses' to music and voice. That problem is that it must be turned off every time you use it. So it is defaulted to ON, and the user has to turn it off every time. I only find it annoying at NIGHT TIME driving. I suppose if I was 12 years I would find it "cool" (or whatever the term is the kids use), but I just find it very annoying at night. During the daytime it is not bright enough to matter. At night it is like a pulsing beacon in my cigarette lighter power adapter. ... show more
Reviewed in the United States on January 1, 2025 by Melensdad

  • Room to Grow
Color: Black
This product does work but has some downsides that should be noted. First and most importantly, when you take a call and your phone is connected to this device it will go through the microphone on the Syncwire. This leads to very poor call quality and requires me to switch my phone off the device so the other person can hear me. Also, I'm not sure if it's just how it connects to my phone but it will always max out my volume initially. I have been startled many times by this. Furthermore, if I have the volume too high on my phone the sound quality drops off considerably. Some positives are that it was easy to set up, that my phone connects well to it, and that it was relatively cheap. Overall, this product does it's job but there are many areas for improvement. ... show more
Reviewed in the United States on July 5, 2026 by Sam

  • Works Great!
Color: Black
I bought this for my 2008 Miata which has the Bose system with a multi-cd system that no longer works. I actually got the Syncwire Bluetooth Transmitter as a stop gap while I shopped for a new car stereo unit. To my surprise, this Syncwire Transmitter works great! Much better than I expected! I’m thinking now of just keeping the Bose unit and using the Syncwire Transmitter and using my iPhone for the music source. Great value, no connectivity issues, music sounds great. ... show more
Reviewed in the United States on April 13, 2026 by James

  • It’s good but could be better
Color: Black
It’s good, I don’t know if it’s my truck but on certain places the static becomes too much and I have tried multiple stations. I had other products similar to these and this would scan the radio stations to see which one is the best. The features are fine, the bass light is a bit annoying but can be turned off. The bass booster works great. The phone call button is useful but haven’t tested the microphone, you can press once this button to play or pause your music but can skip the song with 2 taps which is something I wish it had It’s really easy to connect to it and delay is almost none. Good value for the money ... show more
Reviewed in the United States on March 22, 2026 by Ian J.

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