---
product_id: 230311654
title: "Nulaxy KM30 Bluetooth Car Adapter, FM Transmitter with 1.8\" Color Screen, Hands-Free Calling Strong Mic, QC3.0 Fast Charging, Treble & Bass Sound Music Player, Wireless Radio Receiver, AUX TF USB"
brand: "nulaxy"
price: "270 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Nulaxy"
url: https://www.desertcart.ro/products/230311654-nulaxy-km30-bluetooth-car-adapter-fm-transmitter-with-1-8
store_origin: RO
region: Romania
---

# QC3.0 ultra-fast charging Customizable treble & bass sound 1.8" vibrant color screen Nulaxy KM30 Bluetooth Car Adapter, FM Transmitter with 1.8" Color Screen, Hands-Free Calling Strong Mic, QC3.0 Fast Charging, Treble & Bass Sound Music Player, Wireless Radio Receiver, AUX TF USB

**Brand:** nulaxy
**Price:** 270 Lei
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate your drive with sound, speed & style—because your car deserves the KM30 edge!

## Quick Answers

- **What is this?** Nulaxy KM30 Bluetooth Car Adapter, FM Transmitter with 1.8" Color Screen, Hands-Free Calling Strong Mic, QC3.0 Fast Charging, Treble & Bass Sound Music Player, Wireless Radio Receiver, AUX TF USB by nulaxy
- **How much does it cost?** 270 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/230311654-nulaxy-km30-bluetooth-car-adapter-fm-transmitter-with-1-8)

## 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

- • **Power Up in a Flash:** QC3.0 fast charging port delivers up to 4x speed—never run low on juice during your commute.
- • **Tailor Your Soundscape:** Switch between treble & bass modes to match your vibe and car audio setup perfectly.
- • **Vivid 1.8" Color Display:** Instant glance info on tracks, calls, FM frequency & battery voltage—stay connected effortlessly.
- • **Plug & Play Universal Fit:** Compatible with most vehicles’ cigarette lighter sockets—upgrade your ride in seconds.
- • **Seamless Hands-Free Control:** Crystal-clear calls with noise-cancelling mic for safer, smarter driving.

## Overview

The Nulaxy KM30 Bluetooth Car Adapter transforms any vehicle into a smart, connected audio hub with its 1.8" color screen, hands-free calling via a powerful noise-cancelling mic, and customizable treble & bass sound modes. Featuring QC3.0 fast charging and multi-input support (Bluetooth, USB, AUX, microSD), it ensures seamless music streaming and quick device charging. Designed for universal compatibility and ease of use, the KM30 is the ultimate upgrade for millennial professionals seeking a sleek, functional in-car experience.

## Description

desertcart.com: Nulaxy KM30 Bluetooth Car Adapter, FM Transmitter with 1.8" Color Screen, Hands-Free Calling Strong Mic, QC3.0 Fast Charging, Treble & Bass Sound Music Player, Wireless Radio Receiver, AUX TF USB : Electronics

Review: No Frill FM-Bluetooth Transmitter - This is really a no frills FM-Bluetooth Transmitter. But there are some faults to this. Let me share the bad then move on to the good. But let me share this major tip. Set the transmitter volume to maximum. While this is a FM-Bluetooth transmitter, it is really is not meant for phone to phone conversation & this product isn't it's strongest feature. Why? Let me explain. When making or receiving a call. You have to press your preset radio station if it's not already chosen to make or receive calls. Especially if you are listening to another preset radio station. It can be annoying to hit that FM Transmitter station. This has happened to me on several occasions. But it'll be repetitive soon. Now several users has mentioned about the feedback noise. While this is true and it stems from the alternator. It's only when you are on a bluetooth call and the radio volume is on a very high setting. However, this does not affect during bluetooth music streaming or using the USB Drive. What I mean is that, when you need to hear someone from the other end of a phone call. The transmitter isn't as strong to produce the sound to all speakers. Even when you have your phone bluetooth volume on maximum. YOu need to turn up the volume from your radio head unit. But again this also depends on your own car speakers as well. So that is one feature that could be improved if the manufacture decides to do so. My other annoyance, is the USB connection. Depending on the cable or USB drive you use. It can be somewhat a tight fit as you can see in my pic. Sure I can buy a right angle cord to charge my phone. But why add more cables to my collection? Now for the USB drive. This can be somewhat a good thing and a bad thing. Upon start up. It can either be recognized or not. Sometimes while playing it'll just go to "unrecognized" for several seconds. Then it comes back again. This product only plays MP3's. No wav, mp4. I cannot comment on AAC or ALAC as I don't have songs in those format. So if you going to bring your music onto a USB Drive. Be sure it's in a format that the KM 30 can play. I haven't tried the SD card feature as of yet. So I will make an update at a later time. The good. The Bluetooth streaming is great. Providing you set your equalizer on your phone correctly or neutral. Most modern Smartphones has an EQ feature. So I suggest you play your favorite song or a song that has a balance of bass, treble and mids. This will ensure that whatever streaming music you use. You will get that sound great. Even with the OEM speakers. Once that is complete. You will want to adjust your stock your radio sound settings. Most stock radio has bass, mids and treble. Set those at neutral and adjust accordingly. Then move onto the KM30 bass and treble and adjust accordingly. This will take some to get the sound you are after from your . Using a USB Drive? Well this all depends on your music library. If you have a library of music on a hard drive, not all music are set a particular bit rate (kbps). I know I don't. I have bit rates ranging from 92kbps to 320kbps. So the best method from my 2 week experience. Again find a music that is really balanced with bass, mids and treble and have a 128kbps. I actually used Metallica- Hollier than Thou and Delinquent Habits - California. Yes I have a wide range of music taste when I cruise. When you play you will have to make adjustments to the bass, mids and treble from your stock radio and from the KM30. So music lovers between normal radio stations, music streaming to music on a USB drive. You will need to find that balance of sound. While this might be a pain. It's so much better than making a phone call. Again this is a no frills FM-Bluetooth Transmitter. This works perfect for older cars once the sound is dialed in correctly. My only suggestion that this product would have an edge over the others. If this could pivot left and right. But that is a small pet peeve on my part. Enjoy! Car 2004 Mazda3 Hatchback. Stock Radio with 2 year old JBL Club 6x8 Speakers in 4 doors. No amps.
Review: Exceptional Product - This transmitter not only sounds great, but it also looks and feels great. The sound quality is as good as your speakers allow it to be. In my case, everything sounds great. I rarely adjust the bass or treble unless I want to mess around with the audio, but it's not necessary. Make sure to use radio-locator or any other website for locating unused radio channels in order to get the best possible performance out of this product's main transmitter feature. The design allows it to be so low profile that it's not an eyesore. Make sure to remove it once you're done though because it does stay on and can slowly drain your car's battery. Another great thing about this product is its durability. I live in California so the sun is not shy to come out. I've left the product in our SUV's front compartment ever since I bought it, which was months ago, and it's still running perfectly. It remembers that it was connected to my phone so I simply plug it in, press play, and head on out. On that note, I would also like to mention that the media controls on this product work for all of the apps I use, such as Spotify, YouTube Music, and Youtube, even when the phone is off. I know that's a common feature, but many products get media controls wrong, not this one. Other things to mention are that the USB ports allow for exceptional charging performance, but I rarely use them so it's not so big a deal to me, but maybe for others. Also, the mic quality as described by people I've called through this product is not the best, but it's good enough to make out what you're saying. It's not a big issue to me because I do not call often when I'm driving, but many others do. The display is great at what it's supposed to do, such as displaying the song name, the song length, the song frequencies, radio station, etc. It's enough information that can be absorbed with a quick glance, do not look at it too long while driving. I cannot comment on the sd card and aux out functionality as I have not used them nor am I planning to because I have no need for them as of now. Overall, this transmitter has great sound quality, great build quality, great features, and a great value. I highly recommend this to anyone looking to add Bluetooth functionality to their car.

## Features

- Car Bluetooth FM Transmitter: Nulaxy KM30 bluetooth car adapter provides multi-solutions for your hands-free driving and in-car stereo streaming. It features a big display screen offering a wider visual interface for more information, such as incoming phone number, track name, FM frequency, battery voltage, Bluetooth connected device and more.
- Stronger Microphone for Better Hands-free Calls: KM30 utilizes stronger microphone, greatly amplify sound reception and strengthen sound quality, bringing a higher level of experience.
- Treble & Bass Music Streaming: You can stream music directly from your car radio via Bluetooth, microSD card, Aux out, and enjoy free switching between treble and bass mode, the color spectrum auto-syncs with your music.
- QC3.0 Fast Charging: It Comes with a QC3.0 charging port to deliver high-speed charging to driver and passenger, the charging time is 4 times faster than conventional charging.
- Kindly Note: Compatible car cigarette lighter socket dimensions: Diameter (without spring clip): 20mm，Diameter (with spring clip): 24mm, the deepth of the car cigarette lighter socket is 65-70mm. Surface dimensions of the KM30 Bluetooth FM Transmitter: the width of the screen plain surface is 41mm, the length is 85mm, and the thickness is 14-16mm (With rotary button is 24mm). Please compare the size between the transmitter and your car cigarette lighter bofore getting it.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08D3S85FW |
| Additional Features | Big Display Screen, Built-In Microphone, Fast Charging, Hands-Free Calls, Noise Cancellation |
| Audio Input | Bluetooth |
| Audio Output Mode | Stereo |
| Audio Output Type | bluetooth |
| Battery Type | Lithium-Ion |
| Best Sellers Rank | #19 in MP3 Player FM Transmitters |
| Bluetooth support? | Yes |
| Brand | Nulaxy |
| Color | Black |
| Compatibility Options | Compatible |
| Compatible Devices | Car Stereo System |
| Compatible with Vehicle Type | Most Vehicles with Radio and Power Outlet |
| Connectivity Technology | Bluetooth |
| Connector Type Used on Cable | Auxiliary, USB Type C |
| Control Method | Voice |
| Control Type | home_automation |
| Controller Type | HomeKit |
| Customer Reviews | 4.4 out of 5 stars 19,072 Reviews |
| Display Type | LED |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS), Metal |
| Hardware Interface | Bluetooth |
| Human Interface Input | Touchscreen |
| Includes Remote | No |
| Installation Type | Plug In |
| Item Weight | 0.09 Kilograms |
| Lithium-Battery Voltage | 12 Volts (DC) |
| Manufacturer | Nulaxy |
| Material | Acrylonitrile Butadiene Styrene (ABS) , Metal |
| Model Name | KM30 |
| Mounting Type | Dashboard Mount |
| Number of Batteries | 1 Nonstandard Battery batteries required. |
| Number of Channels | 1 |
| Number of Ports | 1 |
| Power Source | Battery Powered |
| Rechargeable Battery Included | Yes |
| Screen Size | 1.8 Inches |
| Special Feature | Big Display Screen, Built-In Microphone, Fast Charging, Hands-Free Calls, Noise Cancellation |
| Supported Application | Bluetooth, USB, microSD card |
| Supported Media Type | TF Card |
| Supported Standards | Bluetooth |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts (DC) |
| Warranty Description | 1 Year Manufacturer |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** Nulaxy
- **Connectivity Technology:** Bluetooth
- **Material:** Acrylonitrile Butadiene Styrene (ABS), Metal
- **Power Source:** Battery Powered
- **Special Feature:** Big Display Screen, Built-In Microphone, Fast Charging, Hands-Free Calls, Noise Cancellation

## Images

![Nulaxy KM30 Bluetooth Car Adapter, FM Transmitter with 1.8" Color Screen, Hands-Free Calling Strong Mic, QC3.0 Fast Charging, Treble & Bass Sound Music Player, Wireless Radio Receiver, AUX TF USB - Image 1](https://m.media-amazon.com/images/I/71GXtvvTN1L.jpg)

## Available Options

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

## Questions & Answers

**Q: The KM30 Car FM Transmitter is not working, or display is not showing.**
A: 1) Ensure the device is properly connected to the cigarette lighter port, and the cigarette lighter is not significantly rusted. 2) Unplug the device and try connecting it again. 3) Check if the cigarette lighter port is receiving power normally.

**Q: The Bluetooth transmitter is not compatible with my car, or compatible size range for car cigarette lighter interfaces.**
A: 1) Compatible car cigarette lighter socket dimensions: Diameter without spring clip: 20mm, with spring clip: 24mm, deepth: 65-70mm. 2) Screen Plain Surface dimensions: Width: 41mm, length: 85mm, thickness: 14-16mm (With rotary button: 24mm).

**Q: Noise is present, but there is no sound.**
A: 1) Confirm that the player is activated and not in pause mode. 2) Check and adjust the volume settings on the car radio, FM transmitter, and the connected external device as needed. 3) Try switching channels to see if it works properly.

**Q: Unable to play.**
A: 1 ) Ensure the USB device is properly connected to the player. Or try using another USB device. 2) Confirm the files on the USB device are supported by the KM30. 3) You're welcome to contact our professional 24/7 service team for any questions.

**Q: The car audio is not receiving sound.**
A: 1) Ensure the FM transmitter is turned on. 2) Verify the frequency of the FM transmitter matches the frequency of the car's radio. 3) Ensure the volume is not set to 0.

## Customer Reviews

### ⭐⭐⭐⭐⭐ No Frill FM-Bluetooth Transmitter
*by G***B on November 15, 2024*

This is really a no frills FM-Bluetooth Transmitter. But there are some faults to this. Let me share the bad then move on to the good. But let me share this major tip. Set the transmitter volume to maximum. While this is a FM-Bluetooth transmitter, it is really is not meant for phone to phone conversation & this product isn't it's strongest feature. Why? Let me explain. When making or receiving a call. You have to press your preset radio station if it's not already chosen to make or receive calls. Especially if you are listening to another preset radio station. It can be annoying to hit that FM Transmitter station. This has happened to me on several occasions. But it'll be repetitive soon. Now several users has mentioned about the feedback noise. While this is true and it stems from the alternator. It's only when you are on a bluetooth call and the radio volume is on a very high setting. However, this does not affect during bluetooth music streaming or using the USB Drive. What I mean is that, when you need to hear someone from the other end of a phone call. The transmitter isn't as strong to produce the sound to all speakers. Even when you have your phone bluetooth volume on maximum. YOu need to turn up the volume from your radio head unit. But again this also depends on your own car speakers as well. So that is one feature that could be improved if the manufacture decides to do so. My other annoyance, is the USB connection. Depending on the cable or USB drive you use. It can be somewhat a tight fit as you can see in my pic. Sure I can buy a right angle cord to charge my phone. But why add more cables to my collection? Now for the USB drive. This can be somewhat a good thing and a bad thing. Upon start up. It can either be recognized or not. Sometimes while playing it'll just go to "unrecognized" for several seconds. Then it comes back again. This product only plays MP3's. No wav, mp4. I cannot comment on AAC or ALAC as I don't have songs in those format. So if you going to bring your music onto a USB Drive. Be sure it's in a format that the KM 30 can play. I haven't tried the SD card feature as of yet. So I will make an update at a later time. The good. The Bluetooth streaming is great. Providing you set your equalizer on your phone correctly or neutral. Most modern Smartphones has an EQ feature. So I suggest you play your favorite song or a song that has a balance of bass, treble and mids. This will ensure that whatever streaming music you use. You will get that sound great. Even with the OEM speakers. Once that is complete. You will want to adjust your stock your radio sound settings. Most stock radio has bass, mids and treble. Set those at neutral and adjust accordingly. Then move onto the KM30 bass and treble and adjust accordingly. This will take some to get the sound you are after from your . Using a USB Drive? Well this all depends on your music library. If you have a library of music on a hard drive, not all music are set a particular bit rate (kbps). I know I don't. I have bit rates ranging from 92kbps to 320kbps. So the best method from my 2 week experience. Again find a music that is really balanced with bass, mids and treble and have a 128kbps. I actually used Metallica- Hollier than Thou and Delinquent Habits - California. Yes I have a wide range of music taste when I cruise. When you play you will have to make adjustments to the bass, mids and treble from your stock radio and from the KM30. So music lovers between normal radio stations, music streaming to music on a USB drive. You will need to find that balance of sound. While this might be a pain. It's so much better than making a phone call. Again this is a no frills FM-Bluetooth Transmitter. This works perfect for older cars once the sound is dialed in correctly. My only suggestion that this product would have an edge over the others. If this could pivot left and right. But that is a small pet peeve on my part. Enjoy! Car 2004 Mazda3 Hatchback. Stock Radio with 2 year old JBL Club 6x8 Speakers in 4 doors. No amps.

### ⭐⭐⭐⭐⭐ Exceptional Product
*by P***Z on June 2, 2022*

This transmitter not only sounds great, but it also looks and feels great. The sound quality is as good as your speakers allow it to be. In my case, everything sounds great. I rarely adjust the bass or treble unless I want to mess around with the audio, but it's not necessary. Make sure to use radio-locator or any other website for locating unused radio channels in order to get the best possible performance out of this product's main transmitter feature. The design allows it to be so low profile that it's not an eyesore. Make sure to remove it once you're done though because it does stay on and can slowly drain your car's battery. Another great thing about this product is its durability. I live in California so the sun is not shy to come out. I've left the product in our SUV's front compartment ever since I bought it, which was months ago, and it's still running perfectly. It remembers that it was connected to my phone so I simply plug it in, press play, and head on out. On that note, I would also like to mention that the media controls on this product work for all of the apps I use, such as Spotify, YouTube Music, and Youtube, even when the phone is off. I know that's a common feature, but many products get media controls wrong, not this one. Other things to mention are that the USB ports allow for exceptional charging performance, but I rarely use them so it's not so big a deal to me, but maybe for others. Also, the mic quality as described by people I've called through this product is not the best, but it's good enough to make out what you're saying. It's not a big issue to me because I do not call often when I'm driving, but many others do. The display is great at what it's supposed to do, such as displaying the song name, the song length, the song frequencies, radio station, etc. It's enough information that can be absorbed with a quick glance, do not look at it too long while driving. I cannot comment on the sd card and aux out functionality as I have not used them nor am I planning to because I have no need for them as of now. Overall, this transmitter has great sound quality, great build quality, great features, and a great value. I highly recommend this to anyone looking to add Bluetooth functionality to their car.

### ⭐⭐⭐⭐ A very satisfactory HandsFree kit
*by T***R on August 24, 2023*

The item arrived well-packaged and with an aux cable for cars like mine that do not have built-in Bluetooth. Connecting it to a Free FM station on my radio was easy enough. The unit plugs into the car's cigarette lighter, although it's a very tight fit and requires some force to get it in. The biggest downside is that there does not seem to be an 'on/off' switch for the unit, so it is on when it is inserted into the lighter. This will be a small but continuous drain on the car's battery, which bothers me as the car can stand for up to three days without use. I have to manually remove it each time I leave the car. Given the tight fit, this is an irritation. I was not overly impressed with the audio quality, although, to be fair, I wear hearing aids that don't give me '20/20' hearing in all environments, and the car's stereo is a standard factory fit. Moreover, I guess I cant expect studio-quality sound coming from an mp3 on my mobile, sent by Bluetooth to this unit and then transferred via the unit's amplifier (with its own inherent quality) to my car stereo, also with its own amplifier. There is bound to be some quality degradation, and as a semi-pro muso used to using in-ear monitors, I'm likely a bit too critical. The purpose of this review is to guide others, so the real question is, would I recommend it? The answer is yes. I recommend it. It's a neat, largely functional piece of kit well worth the price and more than adequate for most users. Close to 5 stars, but the missing 'on/off' switch made it less than perfect. (Maybe I must rtfm. If I find the 'on/off' function, I will upgrade to 5 stars.)

## Frequently Bought Together

- Nulaxy FM Bluetooth Transmitter for Car, Strong Microphone Bluetooth Car Adapter with 1.8" Color Screen for Hands-Free Calls, Supports QC3.0 Charging, Treble and Bass Sound Music Player- KM30
- 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)
- 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

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-07-09*