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๐ Elevate your drive with smart sound & style โ donโt get left behind!
The Nulaxy KM28 Bluetooth Car Adapter transforms any vehicle into a tech-savvy hub with a sharp 2.05" color display, dual QC3.0 USB fast charging ports, and a high-fidelity noise-cancelling microphone. Designed for easy air vent mounting, it supports multiple audio inputs including Bluetooth, USB, TF card, and AUX, while offering customizable bass/treble settings and vibrant LED lighting modes. Perfect for professionals craving seamless hands-free calls and premium sound on the road.







| ASIN | B09LYR69TR |
| Additional Features | 8 Colorful LED Backlit Modes, Air Vent Clip, Big Color Screen, Fast Charging, Hands-Free Calls |
| AntennaDescription | Built-in antenna |
| Audio Input | Bluetooth, USB drive, TF card, AUX line |
| Audio Output Mode | Stereo |
| Audio Output Type | internal |
| Battery Weight | 10 g |
| Best Sellers Rank | #20 in MP3 Player FM Transmitters |
| Brand | Nulaxy |
| Color | Black |
| Compatibility Options | Smartphone, MP3 player, USB drive, TF card, Bluetooth-enabled devices, Car stereo system |
| Compatible Devices | Car |
| Compatible with Vehicle Type | Car |
| Connectivity Technology | Bluetooth |
| Connector Type Used on Cable | USB 3.0 |
| Control Method | Voice |
| Control Type | Button Control |
| Controller Type | Button Control |
| Customer Reviews | 4.2 out of 5 stars 6,205 Reviews |
| Display Type | Color Screen |
| Enclosure Material | Plastic |
| Hardware Interface | Bluetooth, USB |
| Human Interface Input | Microphone |
| Installation Type | Plug In |
| Item Dimensions L x W x H | 3.23"L x 2.05"W x 1.69"H |
| Lithium Battery Weight | 0.5 g |
| Lithium-Battery Energy Content | 185 watt-hours |
| Manufacturer | Nulaxy |
| Material | Plastic |
| Model Name | KM28 Bluetooth FM Transmitter for Car |
| Mounting Type | Air Vent Mount |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Channels | 2 |
| Number of Ports | 4 |
| Outer Material | Plastic |
| Power Source | Battery Powered,Corded Electric |
| Product Dimensions | 3.23"L x 2.05"W x 1.69"H |
| Screen Size | 2.05 inches |
| Special Feature | 8 Colorful LED Backlit Modes, Air Vent Clip, Big Color Screen, Fast Charging, Hands-Free Calls |
| Supported Application | Bluetooth-enabled applications |
| Supported Media Type | bluetooth |
| Supported Standards | WMA MP3 WAV APE FLAC |
| Unit Count | 1 Count |
| Warranty Description | Goods can be returned and exchanged for no reason within 30 days after arrival |
| Wireless Compability | Bluetooth |
J**Z
A Bluetooth/FM car transmitter that has a microphone that works!
If you are a roadwarrior with an older vehicle and like to stream music, make hands-free calls through your vehicle sound system (where the other person on the call can actually hear you), plus have several handy features in an attractive package, then this new Nulaxy unit should be on your short list of vehicle Bluetooth/FM car transmitters. I own three older German cars (two '99s and an '04), none of which support bluetooth connections to their respective radios. Over the last 10 years, I've purchased maybe a dozen or so Bluetooth-to-FM transmitters including Nulaxy's original BT/FM transmitter, and while they all worked fairly well as far as being able to pair my iPhones to the car radios to play music, they all fell completely flat when it came to the fidelity of the built-in microphone when making hands-free calls while driving. Most of the time I was forced to switch my phone to speakerphone because the other person on the line could barely hear me even though I was practically yelling into the mic on the BT/FM transmitter. Unacceptable, but no other options. Fortunately, now there are! Recently I set out to find a BT/FM transmitter with either a plug-in external mic or a decent built-in mic and voila, this new Nulaxy model popped up on Amazon along with several other brands, all featuring rather robust looking microphone inputs instead of the tiny pinhole mics of the older models. I chose this Nulaxy unit as I am familiar with the brand and because it offers several features that were not available with the first gen or other newer models. PROS: - The head unit of this model can be mounted on the AC vent (or the dash with some creative use of velcro) making it far easier to see and use while driving. All of the older models had to be plugged down low in the car's cigarette lighter making it virtuallly impossible to adjust while driving (specifially when changing FM bands if the band being used is stepped on by a radio station on or next to the FM frequency being transmitted to. If you have ever owned a BT/FM car transmitter and travel a lot, you know exactly what I'm talking about). - Very nice, sharp 3" color display showing all necessary information - Info on screen is very legible - Multi-colored graphic equalizer display that turns out to be actually useful when dialing in just the right mix of bass and treble. - Lighter plug has two USB ports including a fast charger port, which is able to get my iPhone 15 from 20% to 80% charge in 15-20 mins of driving. Nice! - Bass boost! At full boost, it sounded almost like there's a subwoofer in the car. (I had to turn it down to about 50% to avoid blowing out the old OEM speakers) - Treble boost. Not as "Wowsy" as the bass boost, but it does let you change the EQ depending on what music is playing. Will probably become a "Can't live without" feature over time. - It looks like it belongs on the dash. (Several passengers asked me if this was a MB/BMW accessory! LOL) - It has USB and Microdisk inputs if you like to play pre-mixed MP3s. Haven't used them and likely never will, but I imagine they work fine. - Excellent price point. You get a lot of features for a fairly low price. CONS: - Based on past experience with previous gen units, I am unsure of how long it will take for the screen to die or the control buttons to stop working. Typically, the previous model screens and buttons would be dead or close to death within a year or so. Fortunately, Nulaxy has a 2-year replacement warranty for this model giving me some level of comfort. I'll update a year from now and let ya'll know how that goes. - This is nitpicking - but - the display screen backlight is set for optimal viewing at night, which as a default makes sense. However, it would be nice to include a day/night button to boost the display backlight, especially on sunny days. With sunglasses on, I literally cannot see anything on the display and without sunglasses on, it is subdued at best, but readable. (Nulaxy, get your engineers on that asap!)
S**E
Excellent Little Device If You Have an Older Car
I inherited a well-maintained 2011 CRV with low mileage. So, no bluetooth, USB ports...just a nice FM/AM radio and CD player, (not even a backup camera). I also have a 2015 vehicle that has bluetooth, etc. After getting tired of listening to the same CDs over-and-over, I purchased a screen device that had CarPlay, etc. That unit was intermittent and just okay, but cost just over $100. I decided that I really only needed something that could play music files. Bluetooth wasn't an important feature and I wasn't overly concerned about FM connection as I was planning on going directly thru the car's aux port. I chose this particular unit for a few main reasons: 1. Cost, $23 at the time, (if it suffered early failure, no big financial loss). I looked at the upgraded model and though less expensive, I didn't like the look of it as well as the bass/treble knobs. 2. Size, not large so as to not block a lot of the console 3. Audio output jack, Micro-SD slot, USB slot I have used the device for a week now and I absolutely love it. My 3 criteria were covered, and the unit itself has exceeded my expectations for several reasons listed below: 1. Extremely easy set-up. Plug-and-play at its best. I loaded up a 64gb micro-SD, creating files within files, (my way of creating playlists). The unit recognizes the layout and keeps the folders organized. 2. Bluetooth: Though I wasn't interested in the Bluetooth capabilities, I gave it a try. The unit immediately connected with my iPhone 12 Pro with the most recent iOS installed. Call function was quick and easy, (unlike my previous more expensive CarPlay device). Call went thru quickly and audio quality was clear. The caller could hear me but I had to speak loudly, which isn't much different than in my car with actual bluetooth. So pretty impressive for a tiny little mic. 3. Music sounds fantastic thru my car's factory speakers. I left my car's bass/treble settings as I had them with them both at 4, (5 being the highest). I then micro adjust within the Nulaxy unit depending on how the particular song is sounding. If you press the dial button, that will lead you to some system settings, and there are nicely programmed pre-set equalizer settings. You can also delete files if you want. Button responsiveness is excellent. Skipping forward and backwards is quick. I am using SanDisk 64GB MicroSDXC Ultra Uhs-1. 4. My car's sound system volume has a huge difference between levels. For example, if I had it at 5, dialing in 6 would be far too loud. I can leave the car's radio volume at one setting and adjust the volume more finely with the Nulaxy's volume control, which is a lot more refined. I also like how the Nulaxy returns to its main screen pretty quickly if you press the controls to access either the system settings or the bass/treble settings. Other units tend to lag a second too long. 5. You can manually power off the unit so it's not operating while you're driving, or you can just leave it on have it turn off with your car, (as long as your aux power turns off with your engine). What I really like about the Nulaxy is that it remembers where you left off. Not only will it remember if the unit was powered down manually or not and return to that setting when you start your car, but it will remember where you were in your song list, (and within the song), and what your equalizer settings were. It also managed to do this when I unplugged the device from the aux power. This is a very nice feature. I'm not a huge fan of vent attachments, as I have found them to be fairly unstable, block the vent, and then they wind up pulling the fins of the vent in some odd direction that blows the air where you don't want it, so I was a little disappointed that the vent attachment is molded onto the back of the device as I was planning on attaching it not on one of my car's vents. If you do want to attach it to a vent, the fact that it is molded onto the until will make it much sturdier and not have it bounce around. That being said, it is a fairly lightweight device. What I did wind up doing is squeezing the vent attachment into the small storage slot that the older CRV has. I then added a small piece of 3M double stick foam to the edge closest to the steering wheel and secured it to the plastic of the dash. I am so pleased with this setup. It is extremely secure and feels like it's cemented to the dash. It doesn't block any of my controls and the mic is closer to me. I even still have access to place small items in the little cubby space. All-in-all this is a fantastic little unit that costs less than you'd spend on a work lunch. It outperforms some of the more expensive units with CarPlay. Since it is so lightweight it does feel kind of "cheap," but it certainly does NOT perform like some cheap electronic. I would be concerned that the bass/treble buttons might fail at some point, but I think if you are gent with the buttons they should last. I will of course update if anything changes down the road. But even if this Nulaxy only last a year, it certainly would be more than worth it for how it performs and how little the cost.
P**A
Surprisingly Good! (With most of your questions answered at the end)
I have a van from an era where there was no real reason to hook up your phone to your car (also known as not that long ago). That mean no native bluetooth connectivity, no Aux input (or more correctly any port use to send audio to the radio), only an cd player, tape slot, and a good old fm receiver. When I finally reached the point where I could not longer physically stand the local radio stations, I was in trouble. I needed to find a way to listen to something better, something I could access on my phone. I am not made of money and I was not looking to spend more than $30.00. I tried those tape adapters, but they did not really work consistently, especially since my sister thought the best way to make them work was to pull on the audio jack, which over time fully broke them. Then one day while trying to buy yet another tape adapter I saw something that gave me hope. I saw a bluetooth to fm transmitter. Quickly I changed the search terms and found this product. My expectations were not all that high given that at least five other legitimate listing of this product sold by other companies (Clearly this was a generic electronic sold to companies who then stick their own branding on it, which is not uncommon). My first month or so with it was mediocre, and the fact I can even say that is an amazing thing. I had an issue with the cigarette lighter (That is what car power ports are called because of their original use) this product was plugged into. The port was very loose, to the extent that plugging in a USB to charge my phone would power off the transmitter. Somehow though with this product getting the most unstable power provided to it, it was still able to transmit with a barely acceptable amount of static (unless the windshield wipers were on). Eventually I fixed the cigarette lighter and the world changed. The static was mostly gone (it is still barely audible in the background of the music and of course in the silence), and I could charge my famously low battery life phone with its preferred amperage 2.1 amps (and 5 volts but anything powered via a USB port will be 5 volts), which means that I could top off my phone pretty effectively on even short drives. The fact that it attempts to auto connect to my phones bluetooth when it is powered on is amazing, because I don't want to spend too much setting it up before I drive. Actually, the only setup I have to do is play my music on my phone (given that my bluetooth is on, and the radio station has not been changed). The initial setup was not all that difficult either. All I had to do, was plug it in, pair it with my phone (It is always set to pair mode when no device is connected, and the name is displayed as T10), set the fm frequency (or channel or station whatever word you prefer) I wanted it to broadcast on and change my radio to the frequency. For better sound quality it is recommended to set the frequency to one not already being broadcasted on. In my area 100.1 (mHz) was just static so I chose that. It should be pointed out that if some person rolled up to me at a stoplight and was enjoying listening to the static (Not judging) on 100.1, they would hear hear what ever I was listening to. Of course unless by chance the person in the next lane was listening to the static on the exact same frequency I was broadcasting (There are a lot of open frequencies in a given area so this is not a high chance), this will never be a problem for you. If you are a person who uses this to make calls, someone could (either by a small chance or by a lot of planning) listen to what the other person was saying (They could not hear your voice as it is not transmitted on the fm side). You could solve that by going on your phone and setting the device to only receive media audio and not call audio (This works on android, but I am not sure if those who use iPhone have that setting, but maybe that is a good reason to switch :) ). One problem I can see (but have not had the chance to encounter... yet...) is while travailing you might end up in an area where there is a signal being broadcasted on your chosen frequency. Depending on where your cigarette lighter is this could be more or less of a problem (I am on the more sadly because I need to duck down to read the display on the device). To address some questions I saw about this product: PLEASE READ BEFORE ASKING A QUESTION ~There is no power button. If your cars is one that continues to power the cigarette lighters when the car is off and keys out of the ignition, remember to unplug it. I should note that very few people will have to worry about this. ~You cannot change the bluetooth display name without firmware modifications. ~It does not have a caller ID feature, or a now playing feature. The LCD Display listes the name of the connected device and other status indicators. On start up it does diplay your battery voltage (The number should be between 12 and 15. If it lower than 12 your car battery might be dead (: ) ~If your device's paired and unpaired voice messages change languages on you, press the center circle button for 5 seconds or so. ~This device will work as long as you have: 1. An FM radio in your car. 2. Your phone has bluetooth connectivity, or a headphone jack or you have a micro sd card with your music on it. 3. A Cigarette lighter port in your car (THE STANDARD CAR POWER PORT) 4. Your car battery is not dead (: 5. There is power going to the device ~The neck is flexible to an extent ~You need to press the skip track button to switch between bluetooth and sd. ~The FM Station can be changed (in a pretty standard fm range) ~Cannot transmit on AM frequencies ~You can use hands free calling if you want. ~All setting are remembered when it is powered off. ~Q: Does this work with *Name of phone* A:Bluetooth is Bluetooth is Bluetooth. If your phone has Bluetooth it will work. ~The USB port is for power only. You can charge your phone (or other usb device) thats it. ~It does have "Fast charging" which as of the current time is any device which outputs 2 amp power. ~You can only pair with one phone at a time. to connect a different phone you must disconnect the first. ~To use voice commands you have to start what ever voice command prompt on your phone. ~It can transmit any audio app on your phone, controls will vary, but works with most major audio apps. ~Q: Can I listen to *audio source* while waiting on a call A: A call will pause you music until you end or deny a call. Unless your car radio can play to sources at once (it can't) you will not be able to play a cd, or sirius xm (unless its trough your phone) or a tape or a different fm station and wait for a call.
K**R
Buy This If You Need a Bluetooth/FM Transmitter
I've had this Transmitter for almost 3 years and I use it everyday. LOVE this thing. I have a 2014 Ford PIU that was bought at auction and had no bluetooth connection available so needed something that I could connect my phone too. It answers calls, and goes through my speakers like bluetooth would and I have never had someone comment on the quality. The sound with music/audiobooks is great as well and you can adjust treble and bass, etc. on it. I do keep my volume on the transmitter at max and then adjust my car volume as needed for best sound. It's easy to connect and easy to plug in. I did have to buy an adapter switch, more for my convenience because my car will keep electronics on if it stays plugged into the V12 socket and I didn't want to have to remember to unplug and plug it back in (honestly I know lazy but I can flip a switch faster so win for me). Even if this craps out on me before the 3 year mark I will buy another. Worth the money to me.
J**Y
Works!
This thing is cool but it definitely lacks some features. The sound quality with the provided auxiliary cord is terrible. It echoes and distorted the music and words. FM transmitting is much better and makes up for the shortfall of the cord. It has different color options for the jog knob and fits the dash decently well. It would be nice if it had a couple of different options to mount, but in my application, I figured it a good spot for it.
G**.
No Complaints, Bluetooth streaming with iPad.
>I have 15+ years experience with various low wattage FM transmitters. >This one is by far the best sounding. >The FM signal is noticeably louder, and clearer than my other transmitters from Scoche and generic brands. >It has the ability to over-power FM noise from neighboring stations in my car, as I commute through various FM "hot spots". >You do have to take the time and find an unoccupied FM frequency though... but that's true with any FM modulator. >The ergonomics of the unit is designed to easily change the broadcast frequency as you drive. >Love the bass and treble EQ controls. They are ~2.5 db gain/cut at ~65Hz and 10kHz at full tilt. Which is perfect for my tastes. Really lets you fine tune the sound. Its a clean bass/treble boost too, it doesn't clip, and muddy things up too bad. Very musical sounding overall. >I like the dancing light display, and the LED ring around the knob. >The voltage indicator is a nice addition. It is about .~2V lower than my actual battery voltage. Which is to be expected, from the cig lighter port. Its good for a ball-park reading, but it won't replace a fluke at the battery post. >I use the included ball / socket clamp and clamp it onto the side wall of my ash tray on the center console. So far this is much better than the flimsy air conditioning vent location. >I have not used it as a hands free cell phone adapter. That is not my intended use for this product.
E**K
Do some good research on the before pulling the trigger
Recommend 3.5mm connection for best sound was plagued with impedance rendering the audio like an AM radio station or Central American torture sessions using wire mattress frames and car batteries *strikes leads to makes a shower of sparks and gratuitously arcing with the jumper cables while howling maniacallyโ. l added screaming for enhanced verisimilitude. Handbook literature provided the troubleshooting equivalent of โplay with the proverbial *rabbit ears* and if that doesnโt work its obviously compatibility issues that since your car is not a newer like you should have preplanned for making this eventual purchase IS YOUR OWN FAULT!!1!1! ๐ฅด Multiple 3.5 cords I had laying were tried to rule a defective cord out. My 10 year old unit I sought to replace used 3.5mm and works crystal clear unless itโs bumped(wear and tear, reason for trying to get an updated unit). I have a 2014 Avenger so maybe that has something to do with it but I doubt it.l as I all Once you scroll past the planted positive 5 star reviews the loser 1-3 rates say to steer away from this item for reasons similar to what I experienced. I will say if everything had worked out right and it worked as advertised then they would have been well worth the modest price tag in my opinion and Iโm not just saying that because I like pretty lights and displays. Soโฆ caveat emptor on this item no doubt, Matt if you have thirty duckets despair and want a new Bluetooth phone, hands-free thing type device for your older beater mobile it may just be worth a shot! ๐ง
B**N
Best bang for your buck!!!!
I must say for the price I was skeptical but I went for it and I am not disappointed. It is cheaply priced with a very high quality build. The screen looks amazing and tells you phone battery, current song playing and works great with Siri. Itโs very easy to connect to your phone. Fits nicely in a car vent and is secure and wonโt flop around like other Bluetooth transmitters that connect to your vent. It also charges your phone very fast. Itโs a great product I would give 6 stars to if possible.
J**A
Good gadget with room to improve
This FM transmitter works as expected, giving good and stable bluetooth connection to my phone and FM connection to radio. The quality of the microphone is satisfactory, the other party hears me well when I speak. The charger charges fast enough. What I wish was different was that the caller's name was shown on the screen. Bigger font would come handy. Not all buttons are illuminated, so sometimes it's harder to find some of them in the dark.
G**1
Muy buen producto
Hasta el momento no he tenido ni un solo problema, funciona correctamente, excelente producto.
F**G
Beyond expectations ๐๐๐๐๐
Many Thank you to the entire Nulaxy team, I did have an issue with the original item, and within a day , from the after sale support, Anita, not only was the issue resolved, the replacement item arrived the next day, well packaged and ready for use. The item itself is small enough not to clutter the dash, the screen is large enough to easily see and operate, function buttons are well placed and are responsive to touch, the multi function knob is precise in function, for volume, taking and ending calls, during music playback, a short press brings up the menu for the equalizer with popular presets to choose from, each preset has a audible change when selected, a working feature, the graphic eq has a spectrum display, bright enough to see in daylight, illuminated, yet soft enough not to be a distraction in the night. Bluetooth connection is very fast and solid, no interference, call reception is clear inside of car, the person on the other end hears the call like it is on a phone speaker, unless they take the call on a Bluetooth in their car. Either way, sound quality is present without being garbled. Same goes for music playback, uninterrupted playback, clear sound connection. The USB and SD card is read and displayed, playback is clear and uninterrupted from signal loss. Charging port is a handy addition, charges well and does not affect playback. A long press on the treble button will turn of the item, otherwise, the item turns off and on with the vehicle. What makes this product stand above other similar brands is the complete customer service, from purchase to after sale care, the Nulaxy company is staffed by people who are sincere in their offerings of products and are committed to standing by and protecting their reputation and will certainly make available a positive resolution to any issue. A trusted company, will recommend and purchase from them again.
S**A
Facile da usare
Funziona perfettamente con la radio originale della Toyota corolla verso 2005.
C**N
Excelente
Lo uso cada vez que cojo el coche. El sonido de la radio y playlist del mรณvil es excelente
Trustpilot
2 weeks ago
4 days ago