---
product_id: 390335334
title: "- Bluetooth Car Adapter with Large Color Screen, Air Vent Installation"
brand: "nulaxy"
price: "฿3082"
currency: THB
in_stock: true
reviews_count: 13
category: "Nulaxy"
url: https://www.desertcart.co.th/products/390335334-bluetooth-car-adapter-with-large-color-screen-air-vent-installation
store_origin: TH
region: Thailand
---

# QC3.0 fast charge USB port 8 customizable LED backlit modes 2.05" vibrant color screen - Bluetooth Car Adapter with Large Color Screen, Air Vent Installation

**Brand:** nulaxy
**Price:** ฿3082
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate your drive with smart sound & style — because your car deserves the upgrade!

## Quick Answers

- **What is this?** - Bluetooth Car Adapter with Large Color Screen, Air Vent Installation by nulaxy
- **How much does it cost?** ฿3082 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/390335334-bluetooth-car-adapter-with-large-color-screen-air-vent-installation)

## 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

- • **Versatile Audio Inputs:** Bluetooth, USB, TF card & AUX support all your music streaming needs effortlessly.
- • **Mood-Setting LED Ambiance:** Choose from 7 static or dynamic color modes to personalize your car vibe.
- • **Seamless Hands-Free Calls:** Advanced noise-cancelling mic & voice assistant keep you connected safely.
- • **Rapid QC3.0 Dual USB Charging:** Power up your devices to 80% in just 35 minutes—never run low on the go.
- • **Crystal-Clear 2.05" Color Display:** Stay informed with caller ID, battery voltage & track info at a glance.

## Overview

The Nulaxy KM28 Bluetooth Car Adapter transforms any vehicle into a smart, connected hub with its large 2.05" color screen, dual QC3.0 USB fast charging ports, and versatile audio inputs including Bluetooth, USB, TF card, and AUX. Designed for safety and convenience, it mounts on your air vent for optimal viewing and features an advanced noise-cancelling microphone for crystal-clear hands-free calls. Customize your driving atmosphere with 8 LED backlit modes, while enjoying quick device charging and seamless voice assistant integration. Perfect for professionals seeking a sleek, multifunctional upgrade to their car audio experience.

## Description

desertcart.com: Nulaxy Bluetooth Car Adapter with Large Color Screen, Air Vent Installation | Enhanced Microphone FM Transmitter, CVC Noise Cancellation, Dual USB Ports Fast Charge, Voice Assistant, 8 Colors LED Light : Electronics

Review: 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.
Review: 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 desertcart 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!)

## Features

- Big Color Screen & Air Vent Clip: Nulaxy KM28 car bluetooth adapter adopts a Big color screen providing you with more information such as incoming phone numbers, car battery voltage, FM frequency, and track names. In addition, the air vent installation offer you better view angle for your safety.
- Dual-USB port & 4 Reading Modes: QC3.0 charging enables you to charge 80% of your device battery within 35 minutes. This radio adapter supports Bluetooth, USB driver, TF card slot(up to 64GB), and 3.5mm AUX output, which meets your various needs.
- Hands-free Call: Transfer all your phone call and audio streaming into wireless through the bluetooth transmitter. You can easily answer,hang up,reject a phone call with the spin button. Enjoy the smart voice control from phone assistant. Try to say “Call Mom”, “Get directions home”, get things done more conveniently and enjoy safe driving.
- Improved Audio Performance: The big microphone can collect voice effectively, and the CVC&DSP noise cancellation can avoid traffic background noise for clearer conversation. Additionally, it provides the BASS & TRE booster modes for you to adjust, just get immersed into your customized music style.
- 8 Colorful LED Backlit Modes: Simply long press the light button to enter the light change mode and choose from 7 mono color modes or the dynamic color-changing mode what you like to create a vibrant ambiance, let it color your car!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 Charge Time | 35 minutes |
| Battery Type | Lithium-ion battery with specific weight and energy content |
| 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 6,176 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 Lithium-ion Cells | 1 |
| 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 |

## Product Details

- **Brand:** Nulaxy
- **Connectivity Technology:** Bluetooth
- **Material:** Plastic
- **Power Source:** Battery Powered,Corded Electric
- **Special Feature:** 8 Colorful LED Backlit Modes, Air Vent Clip, Big Color Screen, Fast Charging, Hands-Free Calls

## Images

![- Bluetooth Car Adapter with Large Color Screen, Air Vent Installation - Image 1](https://m.media-amazon.com/images/I/71fnvQaGttL.jpg)
![- Bluetooth Car Adapter with Large Color Screen, Air Vent Installation - Image 2](https://m.media-amazon.com/images/I/71t5YaC8OIL.jpg)
![- Bluetooth Car Adapter with Large Color Screen, Air Vent Installation - Image 3](https://m.media-amazon.com/images/I/71Rv5qMPEkL.jpg)
![- Bluetooth Car Adapter with Large Color Screen, Air Vent Installation - Image 4](https://m.media-amazon.com/images/I/710tJKFHdzL.jpg)
![- Bluetooth Car Adapter with Large Color Screen, Air Vent Installation - Image 5](https://m.media-amazon.com/images/I/7194l4phI4L.jpg)

## Available Options

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

## Questions & Answers

**Q: What are the dimentions of the unit?**
A: 3 to 3.5 wide 1.5 tall. I love mine. 
I have bought 3 others. None had a off button all were to bright. This one change the color to red and all is well. The hands free phone is wonderful.

**Q: Does aux port support output eg. aux out?**
A: The Auxiliary (AUX) port is a standard sized plug in jack. It takes incoming audio from for example, your radio or tape recorder or phone so that it can be broadcast to your car radio to play out through your car speakers.  So to summarize, it only takes audio in, it does not put audio out.

**Q: Will this unit outpost to aux?**
A: the aux is for input NOT output. The output is the FM station you sync to.

**Q: Doesn't fit in my cigarette lighter - trying to install in a 2000 porsche boxster. anyone find a workaround? it just pops right out.**
A: You have to push it in really, really hard & it will suddenly snap & stay in. I already had a lighter adapter that expands your 1 outlet to 3 outlets. The plug for that works just fine in the lighter & then I plugged the unit hard into the adapter. That way if I can't unplug it, I'm covered!!!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Buy This If You Need a Bluetooth/FM Transmitter
*by K***R on July 27, 2026*

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.

### ⭐⭐⭐⭐⭐ A Bluetooth/FM car transmitter that has a microphone that works!
*by J***Z on December 5, 2024*

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!)

### ⭐⭐⭐⭐ Surprisingly Good! (With most of your questions answered at the end)
*by P***A on February 1, 2025*

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.

## Frequently Bought Together

- Nulaxy Bluetooth FM Transmitter for Car, Wireless Car Bluetooth V5.0 Adapter with Big Color Screen, Support QC3.0 Fast Charging, Hands-Free Call, MP3 Music Player BASS&TRE Booster, TF Card AUX-KM28
- Nulaxy Car Bluetooth FM Transmitter [2024 Upgraded], 1.44" Display Flexible Gooseneck, Handsfree Call Wireless Music Stereo Audio Player Radio Adapter Car Kit USB Phone Charger, TF SD Card AUX-KM18
- SUUSON Upgraded 3-in-1 Car Phone Holder Mount [Powerful Suction] Phone Mount for Car Dashboard Air Vent Windshield,for All iPhone Android Phone (Black)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-08-28*