---
product_id: 630028716
title: "Nulaxy 54W Bluetooth 5.3 Car Adapter, FM Transmitter 4-Port Fast Charging | Wireless Radio Player Car Charger, CVC Noise Cancellating, Deep Bass, 5 Colors LED Backlit, Hands-Free Call Support USB Drive"
brand: "nulaxy"
price: "€ 29.12"
currency: EUR
in_stock: true
reviews_count: 13
category: "Nulaxy"
url: https://www.desertcart.pt/products/630028716-nulaxy-54w-bluetooth-5-3-car-adapter-fm-transmitter-4
store_origin: PT
region: Portugal
---

# 54W ultra-fast charging Deep bass sound boost Bluetooth 5.3 latest tech Nulaxy 54W Bluetooth 5.3 Car Adapter, FM Transmitter 4-Port Fast Charging | Wireless Radio Player Car Charger, CVC Noise Cancellating, Deep Bass, 5 Colors LED Backlit, Hands-Free Call Support USB Drive

**Brand:** nulaxy
**Price:** € 29.12
**Availability:** ✅ In Stock

## Summary

> 🚗⚡ Charge Fast, Drive Smart, Sound Epic!

## Quick Answers

- **What is this?** Nulaxy 54W Bluetooth 5.3 Car Adapter, FM Transmitter 4-Port Fast Charging | Wireless Radio Player Car Charger, CVC Noise Cancellating, Deep Bass, 5 Colors LED Backlit, Hands-Free Call Support USB Drive by nulaxy
- **How much does it cost?** € 29.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/630028716-nulaxy-54w-bluetooth-5-3-car-adapter-fm-transmitter-4)

## Best For

- nulaxy enthusiasts

## Why This Product

- Trusted nulaxy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Crystal Clear Calls & Music:** Bluetooth 5.3 ensures ultra-stable connections with CVC noise cancellation and stunning bass for immersive audio clarity on the road.
- • **Power Up at Lightning Speed:** 54W total output with PD36W & QC18W ports for simultaneous rapid charging of 4 devices—never run low on juice again.
- • **Nighttime Vibes & Visibility:** Five-color LED backlighting not only looks sleek but enhances nighttime usability and safety with intuitive visual cues.
- • **Drive Safer with Hands-Free Control:** Voice command support and tactile raised buttons let you manage calls and music without taking your eyes off the road.
- • **Universal Compatibility & Safety First:** Works seamlessly with 12V-24V vehicles, featuring comprehensive protections against over-current, overheating, and short circuits.

## Overview

The Nulaxy 54W Bluetooth 5.3 Car Adapter is a cutting-edge FM transmitter and 4-port fast charger designed for the modern driver. It combines ultra-fast PD36W and QC18W charging, the latest Bluetooth 5.3 for superior audio and call quality, and hands-free voice controls. With deep bass enhancement, customizable LED lighting, and robust safety features, it transforms your car into a connected, high-performance hub compatible with most vehicles.

## Description

Buy Nulaxy 54W Bluetooth 5.3 Car Adapter, FM Transmitter 4-Port Fast Charging | Wireless Radio Player Car Charger, CVC Noise Cancellating, Deep Bass, 5 Colors LED Backlit, Hands-Free Call Support USB Drive: FM Transmitters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Sound!!!! - The Blue Tooth Car Adaptor has performed excellently. 1. It quickly connected via BlueTooth to my phone. 2. I easily selected a vacant A.M. radio frequency. 3. My car radio picked up the signal insantly. 4. The sound, to me, is as good as bluetooth connection DIRECT to the cars sound system. It is plenty LOUD, NO static, hiss or popping. Excellent. 5. My ciggarrette ligher receptacle is ON continuously. So, the 1st time I parked in my Drive Way, the Bluetooth stayed connected to phone, even though the car radio was off. Music and Calls still went to the parked car. Be sure and unplug the device from the car when you park, to stop bluetooth. 6. Again, a wonderfull device!
Review: Excellent Customer Service - replacement is great! - UPDATE 10/13: Nulaxy Customer Service reached out to me following my initial review to offer assistance and to ensure that I would be satisfied with their transmitter product line. I am very pleased to say that the replacement transmitter they sent is an outstanding replacement product—the model KM30. The transmitter paired seamlessly with my iPhone’s Bluetooth. It was also very easy to connect to my car’s fm radio on an available frequency. I was able to play back music from my iPhone library, connect to navigation thru Siri voice commands and make phone calls, hands free. I inserted a 32Gb USB drive and a 32Gb microSD card and played MP3’s. Clarity and sound quality were excellent—no static. When the MP3’s were loaded onto the thumb drive, I organized them in folders/albums—and it was very easy to search for specific songs and artists (not while driving though). I was able to keep my phone charged while playing music through the charging USB-A port—again with no interference or static. There are other features that I probably won’t use— but maybe with a little more time, I’ll experiment with those features too. Needless to say, I’m VERY impressed and satisfied with the efforts that Nulaxy customer service went through to ensure my satisfaction. I highly recommend this (KM30) transmitter. For those without newer model cars (mine is a 2002 Accord) without Bluetooth, or USB/microSD ports, this device is a must have—especially for hands free phone use. And the cost is VERY reasonable! Well done.Nulaxy! And thank you for all of your additional efforts. INITIAL REVIEW: I was drawn to purchase the transmitter by its small/compact size. I didn’t need lots of bells and whistles—just a basic hands-free transmitter and USB music player with a sturdy profile. It connected quickly and easily to my 2002 Honda Accord OEM radio (FM) and my iPhone Bluetooth. I was able to charge my phone with the USB ports—but I didn’t time the charging process (or finish it). The controls are somewhat small and oversensitive requiring a few attempts to get desired settings. I Connected a 32Gb USB with MP3’s. Music played but with poor sound quality—my other model FM transmitter works much more clearly and with better sound quality. Songs played slower and broke up intermittently. The same songs on the same USB sound very good when played through my other (older) transmitter. During setup, I attempted to connect to several “available” FM frequencies. This NX16 transmitter cannot be connected to frequencies below 88Mhz. My other transmitter was set and worked well on 87.9Mhz and below too (which are typically “free” channels). I tried several frequencies and the sound quality never varied or improved. When connected to a cigarette lighter splitter, the sound quality and playback from the USB was even worse. After hearing the sound quality playback, I did not attempt to try a phone call or to use my phone as a music source or for navigation. The product is not very expensive and “works” but doesn’t suit my needs nor my sound quality expectations. So it may be suitable for some—just not me. The manufacturer makes several other models (similar in design to my older transmitter), so maybe the ones with the bells and whistles and “bulkier” profile work better.

## Features

- 54W High Power Fast Charging, 4-Port Synchronous Charging: Nulaxy Bluetooth car adapter integrates PD36W and QC18W, offering a high-speed and efficient charging solution. Its innovative four-port design supports parallel charging of multiple devices, effortlessly overcoming battery anxiety and enhancing charging efficiency.
- Technological Leadership, Revolutionary Bluetooth 5.3: The iphone fm transmitter for car radio uses the latest Bluetooth 5.3 technology, significantly improving connection speed and data transmission efficiency. Enhanced sound quality ensures rapid and stable connections, providing a clearer, smoother experience for both calls and music playback.
- Stunning Bass, Colorful Lighting Effects: One-touch activation of stunning bass effects reproduces the true texture of music, offering an unparalleled musical experience. The five-color lighting design provides accurate perception at night, ensuring easy and safe operation, making nighttime driving more relaxed.
- Voice Commands and Precise Touch Control: Our bluetooth cigarette lighter adapter supports smart voice navigation from your phone for truly hands-free driving. Its unique raised button design provides precise, sightless control, ensuring safety and convenience while driving.
- Comprehensive Safety Assurance and Wide Compatibility: FM modulator bluetooth for car provides all-around safety protection, including over-current, over-voltage, overheating, and short-circuit protection, ensuring the safety of you and your devices. Its wide compatibility supports 12V to 24V vehicle voltages, suitable for most cars. Nulaxy continues to innovate, offering industry-leading car Bluetooth adapter that ensure safety and compatibility. (Please compare the size between the transmitter and your car cigarette lighter )
- Kindly Note: It's compatible with car cigarette lighter socket dimensions: Diameter without spring clip: 20mm, with spring clip: 24mm (Please make sure the diameter of our transmitter matches the diameter of your car cigarette lighter socket). Before plugging into the car cigarette lighter socket, please check whether there is any foreign matter at the bottom of the cigarette lighter socket and make sure the inside of the car cigarette lighter socket is clean.
- How to Match & Switch Frequencies: First, power on your car radio, tune it to a blank FM frequency. (A blank frequency is a channel with no active radio programs broadcasting on it, producing only a slight rustling or static noise through car's speaker). Set the transmitter to the same frequency as the car radio. Switch frequency: Long press the rotate button of Nulaxy transmitter until the frequency starts flashing, rotate the button clockwise to increase frequency. Otherwise, decrease frequency.
- Pair the FM Transmitter with Your Smartphone via Bluetooth: Enable your phone's Bluetooth is turned on, search for 'BC91', then select 'connect'. Once connected successfully, you can start playing music, using navigation, or enjoying hands-free calling through the device.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1Y1424Y |
| Additional Features | 54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls |
| AntennaDescription | Radio |
| Audio Input | Microphone |
| Audio Output Mode | Stereo |
| Audio Output Type | Speaker |
| Best Sellers Rank | #1 in MP3 Player FM Transmitters |
| Brand | Nulaxy |
| Color | A-Black |
| Compatibility Options | Bluetooth devices, USB devices including USB Type C |
| Compatible Devices | Car Stereo System |
| Connectivity Technology | Bluetooth, USB |
| Connector Type Used on Cable | USB Type A, USB Type C |
| Control Method | Push Button, Voice |
| Control Type | Push Button Control & Voice Control |
| Controller Type | Button Control, Voice Control |
| Customer Reviews | 4.4 out of 5 stars 10,170 Reviews |
| Data Link Protocol | Bluetooth data link protocol |
| Enclosure Material | Polycarbonate (PC) |
| Hardware Interface | USB, USB Type C |
| Human Interface Input | Buttons |
| Installation Type | Plug in Car Socket |
| Item Weight | 0.07 kg |
| Manufacturer | Nulaxy |
| Material | Polycarbonate (PC) |
| Model Name | BC91 |
| Mounting Type | Plug in Car Socket |
| Number of Channels | 1 |
| Number of Ports | 4 |
| Power Source | Battery Powered |
| Special Feature | 54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls Special Feature 54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls See more |
| Supported Application | Any Bluetooth-supported audio application |
| Supported Media Type | MP3, WAV, WMA, AAC, FLAC, USB Flash Drive |
| Supported Standards | Bluetooth 5.3 |
| Voltage | 12 volts_of_direct_current |
| Warranty Description | 1 Year Manufacturer |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** Nulaxy
- **Connectivity Technology:** Bluetooth, USB
- **Material:** Polycarbonate (PC)
- **Power Source:** Battery Powered

## Images

![Nulaxy 54W Bluetooth 5.3 Car Adapter, FM Transmitter 4-Port Fast Charging | Wireless Radio Player Car Charger, CVC Noise Cancellating, Deep Bass, 5 Colors LED Backlit, Hands-Free Call Support USB Drive - Image 1](https://m.media-amazon.com/images/I/71qeoDjC+jL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What is the size of the plug-in connector, and which car models is it compatible with?**
A: Sizes: Diameter 24mm with spring clip, Depth 57mm This size fits most car models but is unsuitable for sockets in recessed areas like glove boxes. After use, hold the car’s socket with one hand and pull out the charger with the other to avoid damage.

**Q: How can I avoid or reduce noise?**
A: For best sound quality, set the car audio volume below 50% before connecting your phone. Then, connect to the FM frequency & Bluetooth. Adjust the phone & BC91 volume first. If it's still too low, adjust the car audio system to reach the ideal level.

**Q: How do I match & switch frequencies?**
A: Turn on car radio to blank FM frequency. Set the BC91 to the same frequency as the car radio. Long-press the BC91 rotate button until frequency flashes. Turn clockwise to increase, counter-clockwise to decrease.

**Q: The device isn't working/power isn't responding/display isn't showing/car audio isn't receiving sound/unable to play?**
A: 1) Ensure that the FM transmitter is on. 2) Verify the transmission frequency of the FM transmitter matches the frequency of the car's radio. 3) Unplug the BC91 and connect it again. 4) Confirm the files on the USB device are supported by the BC91.

**Q: How to pair the FM transmitter with your phone via Bluetooth?**
A: Plug BC91 into car cigarette lighter socket to power on. Enable your phone's Bluetooth is on. Then search for 'BC91 and select 'connect'. Once connected, you can start playing music, using navigation, or making hands-free calls.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Sound!!!!
*by A***R on August 13, 2026*

The Blue Tooth Car Adaptor has performed excellently. 1. It quickly connected via BlueTooth to my phone. 2. I easily selected a vacant A.M. radio frequency. 3. My car radio picked up the signal insantly. 4. The sound, to me, is as good as bluetooth connection DIRECT to the cars sound system. It is plenty LOUD, NO static, hiss or popping. Excellent. 5. My ciggarrette ligher receptacle is ON continuously. So, the 1st time I parked in my Drive Way, the Bluetooth stayed connected to phone, even though the car radio was off. Music and Calls still went to the parked car. Be sure and unplug the device from the car when you park, to stop bluetooth. 6. Again, a wonderfull device!

### ⭐⭐⭐⭐⭐ Excellent Customer Service - replacement is great!
*by S***7 on September 15, 2025*

UPDATE 10/13: Nulaxy Customer Service reached out to me following my initial review to offer assistance and to ensure that I would be satisfied with their transmitter product line. I am very pleased to say that the replacement transmitter they sent is an outstanding replacement product—the model KM30. The transmitter paired seamlessly with my iPhone’s Bluetooth. It was also very easy to connect to my car’s fm radio on an available frequency. I was able to play back music from my iPhone library, connect to navigation thru Siri voice commands and make phone calls, hands free. I inserted a 32Gb USB drive and a 32Gb microSD card and played MP3’s. Clarity and sound quality were excellent—no static. When the MP3’s were loaded onto the thumb drive, I organized them in folders/albums—and it was very easy to search for specific songs and artists (not while driving though). I was able to keep my phone charged while playing music through the charging USB-A port—again with no interference or static. There are other features that I probably won’t use— but maybe with a little more time, I’ll experiment with those features too. Needless to say, I’m VERY impressed and satisfied with the efforts that Nulaxy customer service went through to ensure my satisfaction. I highly recommend this (KM30) transmitter. For those without newer model cars (mine is a 2002 Accord) without Bluetooth, or USB/microSD ports, this device is a must have—especially for hands free phone use. And the cost is VERY reasonable! Well done.Nulaxy! And thank you for all of your additional efforts. INITIAL REVIEW: I was drawn to purchase the transmitter by its small/compact size. I didn’t need lots of bells and whistles—just a basic hands-free transmitter and USB music player with a sturdy profile. It connected quickly and easily to my 2002 Honda Accord OEM radio (FM) and my iPhone Bluetooth. I was able to charge my phone with the USB ports—but I didn’t time the charging process (or finish it). The controls are somewhat small and oversensitive requiring a few attempts to get desired settings. I Connected a 32Gb USB with MP3’s. Music played but with poor sound quality—my other model FM transmitter works much more clearly and with better sound quality. Songs played slower and broke up intermittently. The same songs on the same USB sound very good when played through my other (older) transmitter. During setup, I attempted to connect to several “available” FM frequencies. This NX16 transmitter cannot be connected to frequencies below 88Mhz. My other transmitter was set and worked well on 87.9Mhz and below too (which are typically “free” channels). I tried several frequencies and the sound quality never varied or improved. When connected to a cigarette lighter splitter, the sound quality and playback from the USB was even worse. After hearing the sound quality playback, I did not attempt to try a phone call or to use my phone as a music source or for navigation. The product is not very expensive and “works” but doesn’t suit my needs nor my sound quality expectations. So it may be suitable for some—just not me. The manufacturer makes several other models (similar in design to my older transmitter), so maybe the ones with the bells and whistles and “bulkier” profile work better.

### ⭐⭐⭐⭐⭐ NOTHING BUT GOOD THINGS TO SAY
*by L***. on November 27, 2025*

This Nulaxy Bluetooth unit actually works really well. I was going to buy Bluetooth speakers to clip onto the visor of my 1997 Land Cruiser, and accidentally ran across these little FM xmitter products. There are many brands and models, but this one had a couple of nice features and seemed to come recommended, so I chose it. I tune it to an FM station that has the least static and no signal at all, and I pre-program that frequency to a pushbutton on my radio. The unit connects via Bluetooth almost instantly when the car is started (and a voice notifies me that it's connected), and then on a call, telephone conversation audio comes out clear and smooth. Turn it to its max volume and it may not shake the fenders off your car but it's not bad at all...and that's on a older truck, too. The only music audio I've tried so far is my "Favorites" playlist from a YouTube app. It plays them very nicely. And I can pause them with the multifunction button (and occasionally fast-forward past the ads in between each "track" by turning the multifunction button briefly clockwise...although it sometimes also skips to the entire next track). Fidelity is about as enjoyable as if a radio station was broadcasting the songs. Initially some features weren't working, until I realized that my dashboard cigar lighter is in a recessed dashboard area that's too narrow and the dashboard's plastic was holding the Bluetooth device's "light" button down. This made a number of features not work properly. So I mounted the Nulaxy device on a small extender "stalk" and it works flawlessly. Navigation audio goes silent during a phone call, but that's an iPhone thing…and it comes back automatically and quite instantly when the call terminates. Probably again per the iPhone's own behavior, navigation audio takes precedence over music audio loudness-wise, but the music audio continues playing softly in the background and then comes back to the foreground each time the navigation app stops talking. So I can listen to music while navigating, and it works fine. My strategy if I want to listen to the radio is to listen to whatever station I want...baseball game on AM or whatever...and if a phone call comes in, I just switch the radio quickly to FM and hit the radio's pre-programmed frequency button, and then I answer the call on the Nulaxy device. If I want to initiate a call, I turn the radio to the FM frequency first and then initiate the call on the phone (by typing or by using Siri commands), then converse via the Bluetooth device. The "dial last number called" quick-double-button-press works too...but only seems to work for the last call that I myself initiated, not the last call that called me and spoke with me. Not a big deal there, and that could be an Apple iPhone thing too, for all I know. I'm not sure if Siri commands work without touching the phone...but of course they still work on the phone itself. About the only small wrinkle, and it's just the nature of different signal source amplitudes and not the fault of this device, is that FM radio volume must sometimes be turned up a bit to compete with road noise...so in those cases I need to remember that I had turned the radio volume up before I switch back to the baseball game...or I may hear "Beanball!" or "Kill the umpire!" come out of the speakers really loud. (But since I'm yelling those things at the top of my lungs whenever I listen to a ball game anyway, it's hardly a big deal...) Overall this great little gizmo has it all over my original idea of putting speakers on the visor above my head -- so many limitations and complexities are simplified and improved with this approach compared to separate speakers (which would need to be manually turned on, and frequently recharged, and I'd still have to turn off or pause other audio to make them worthwhile at all). This device is a dirt cheap way of adding full-featured completely satisfying Bluetooth connectivity to my nearly-30-year-old Land Cruiser for a whopping $12.47 Black Friday sale price. Would I buy another? C'mon, man, who the heck needs two older Land Cruisers? : )

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-02*