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Availability:
In Stock.
Arrives
Tuesday, Oct 27
Recently Viewed
Color: A-Black
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.
Description
54W Bluetooth 5.3 Car Adapter with 4 Charging Ports Car Bluetooth FM Transmitter FM Bluetooth Transmitter for Car with 1.8" Color Screen Bluetooth Car Adapter with Dual USB Charger Air in-Flight Bluetooth Audio Transmitter Receiver for up to 2 AirPods & Wireless Headphones Bluetooth 5.0 FM Transmitter for Car Bluetooth FM Transmitter for Car Bluetooth 5.3 Car Adapter with Air Vent Installation Bluetooth Car Adapter Wireless In-Car Bluetooth FM Transmitter FM Transmitter for Car What is the size of the plug-in connector, and which car models is it compatible with? 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. How can I avoid or reduce noise? 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. How do I match & switch frequencies? 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. The device isn't working/power isn't responding/display isn't showing/car audio isn't receiving sound/unable to play? 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. How to pair the FM transmitter with your phone via Bluetooth? 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. New Version-BC91 NX10 KM18 KM28 MT02 NX12 KM30
Special Feature: 54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls See more
Brand: Nulaxy
Connectivity Technology: Bluetooth, USB
Power Source: Battery Powered
Material: Polycarbonate (PC)
Additional Features: 54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls
Enclosure Material: Polycarbonate (PC)
Color: A-Black
Supported Media Type: MP3, WAV, WMA, AAC, FLAC, USB Flash Drive
AntennaDescription: Radio
Mounting Type: Plug in Car Socket
Installation Type: Plug in Car Socket
Brand: Nulaxy
Model Name: BC91
Manufacturer: Nulaxy
Warranty Description: 1 Year Manufacturer
Control Type: Push Button Control & Voice Control
Control Method: Push Button, Voice
Human Interface Input: Buttons
Connectivity Technology: Bluetooth, USB
Wireless Compability: Bluetooth
Data Link Protocol: Bluetooth data link protocol
Item Weight: 0.07 kg
Power Source: Battery Powered
Voltage: 12 volts_of_direct_current
Compatible Devices: Car Stereo System
Supported Standards: Bluetooth 5.3
Compatibility Options: Bluetooth devices, USB devices including USB Type C
Supported Application: Any Bluetooth-supported audio application
Hardware Interface: USB, USB Type C
Connector Type Used on Cable: USB Type A, USB Type C
Number of Ports: 4
Audio Output Type: Speaker
Audio Input: Microphone
Audio Output Mode: Stereo
Number of Channels: 1
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: A-Black
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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Reviewed in the United States on November 27, 2025 by Linh V.
Color: A-Black
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.
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Reviewed in the United States on September 15, 2025 by Slivvy77
Color: A-Black
I got this item back in August of 2025 and I had something similar many years ago when I was driving a delivery van overnight and couldn't find anything on the radio so I wanted to stream things from my phone. This thing pretty much is flawless You plug it in the cigarette lighter and it auto picked a station which I guess it already has preset that knows that nothing is usually on that frequency and then I turn my car to the right auto frequency and play my music streaming off my phone couldn't be simpler. I use it with my unlimited data which I actually get a broil affordable price on so I stream the serious satellite radio using the app and I haven't really needed to listen to the car radio for many many months. I can get local stations even a.m. and FM and then of course with serious satellite radio app I get hundreds of other stations. It's the perfect alternative when you're tired of listening to the commercials all the time and you're tired of stations that go in and out especially a.m.. The things work flawless I leave it plugged in in the car all the time and never have a problem connects automatically when I turn on my Bluetooth. The sound quality I assume is great I don't know sounds just like the regular radio domain I don't have a high definition car stereo anyway It's just the factory model and an old Subaru I drive but everything sounds crystal clear to me I'm sure it could be better if there was some high end equipment in the car but anyway I mean literally for the price of two Starbucks coffees you get this product that can do so much and never have to worry about plugging cables in or any of that stuff again. Overall I highly recommend it I'm giving it five stars.
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Reviewed in the United States on June 27, 2026 by William K.
Color: A-Black
Its not perfect, but it's cheap and absolutely worth it I drive an SUV from 2012. It COULD have built in bluetooth, but getting that installed is expensive and well. You've seen the American economy right now. Your phone will connect to it the moment you turn your car on. The audio quality is decent, but will degrade if you decide to plug things into it, it does charge fast though. I also notice static during phone calls. Now. The bass booster. That thing is FUN The audio isn't as good but if you turn the bass on your car all the way up, press that button, and the entire neighborhoods going to be shaking, it seems quieter rather than staticky though. My brothers will take it, play the songs with the heaviest bass they can, and we drive like that. It's a great time! There is another button that changes the color, so if your car has a color scheme with lights it can fit! Mine's red so my adapter is set to red! Overall, it's more than worth 15$, and seems to regularly go on sale as well.
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Reviewed in the United States on May 22, 2026 by Ari
Color: A-Black
Bought one and loved the ease of set up and use, so I just ordered another one. First vehicle 2004 Toyota Highlander Second vehicle 1997 Dodge Dakota truck. Both worked perfectly in the cigarette lighter. Tuned to an unused FM channel in my area (or any unused channel in your area) 88.5 and bingo! Worked without a single issue in BOTH vehicles. For the price and all the options, like led color changes, hands free phone calls and more, this is a real bargain and the sound is a good as the Bluetooth connected to our newer auto. This is a real value and I very highly recommend this product. That is why I just bought another one! You will be pleased you did. Very easy to set up. Read the instuctions and you will be very happy with the results.
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Reviewed in the United States on September 3, 2026 by Steve
Color: A-Black
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!
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Reviewed in the United States on August 13, 2026 by Amazon Customer
Color: A-Black
This device works great to connect my phone to my radio. I like how it has multiple charging ports in both usb and usb-c. You can also change the color of the light on the face of the device if you’re driving at night and it’s distracting for you. I recommend putting your phone at max volume once connected and turning the volume to your liking with the radio dial, just make sure you turn it down at the end so it doesn’t blast when you turn it back on. I would say the sound quality depends mostly on your speakers, but I haven’t had any problems with mine and my car is a 2006 so this gets the job done just as well as something more expensive. There is a slight buzzing static in the background if I have the volume very loud, but that could just be radio waves or something like that. I would purchase this again.
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Reviewed in the United States on September 2, 2026 by C. Day
Color: A-Black
I bought this for my 2007 Honda Odyssey, which has an AUX button on the radio but surprisingly doesn’t actually have an AUX input anywhere. This FM transmitter ended up being the perfect workaround. Setup was very easy. I plugged the device into the car’s power port, found an unused FM station, paired my phone through Bluetooth, and was playing music within minutes. The Bluetooth connection was quick and stable, and the sound quality is much better than I expected for the price. Another thing I like is the size. It’s compact and doesn’t take up much space in the power port area, so it doesn’t get in the way while driving. It’s also easy to move between vehicles if needed. Once plugged in, it stays securely in place and hasn’t felt loose or wobbly during use. My only complaint is the volume consistency. I’ll get the transmitter volume set just right, but if I switch over to regular radio or play a CD and then come back, the volume can be much louder than I expected. It seems like the transmitter and the vehicle’s other audio sources don’t always match volume levels, so I have to be careful when switching between them. I’ve only had it for one day, but so far it’s been a great and affordable fix for adding Bluetooth to an older vehicle. If you have a Honda Odyssey like mine that teases you with an AUX button but gives you no AUX port, this is a solid solution.
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Reviewed in the United States on July 4, 2026 by Mía