---
product_id: 677297714
title: "KM30 USB FM Transmitter, Bluetooth Car Radio Adapter with Powerful Microphone with 1.8 Inch Color Display, Supports QC3.0 Music Player, Treble and Bass"
brand: "nulaxy"
price: "€ 73.44"
currency: EUR
in_stock: true
reviews_count: 5
category: "Nulaxy"
url: https://www.desertcart.be/products/677297714-km30-usb-fm-transmitter-bluetooth-car-radio-adapter-with-powerful
store_origin: BE
region: Belgium
---

# QC3.0 fast charging port (4x speed) Treble & bass adjustable music streaming 1.8-inch vibrant color display KM30 USB FM Transmitter, Bluetooth Car Radio Adapter with Powerful Microphone with 1.8 Inch Color Display, Supports QC3.0 Music Player, Treble and Bass

**Brand:** nulaxy
**Price:** € 73.44
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate your drive with sound, speed & style — don’t get left behind!

## Quick Answers

- **What is this?** KM30 USB FM Transmitter, Bluetooth Car Radio Adapter with Powerful Microphone with 1.8 Inch Color Display, Supports QC3.0 Music Player, Treble and Bass by nulaxy
- **How much does it cost?** € 73.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/677297714-km30-usb-fm-transmitter-bluetooth-car-radio-adapter-with-powerful)

## 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

- • **Dynamic Color Display:** 1.8-inch screen syncs with your music & shows calls, battery, tracks, and FM channels for a smarter drive.
- • **Lightning-Fast Charging:** QC3.0 port charges your devices up to 4x faster, keeping you powered on every journey.
- • **Voice Assistant Integration:** Seamlessly access Siri or Google Assistant for calls, texts, and navigation without taking your eyes off the road.
- • **Customizable Audio Experience:** Switch effortlessly between treble and bass modes while streaming via Bluetooth, USB, MicroSD, or AUX.
- • **Crystal Clear Hands-Free Calls:** Powerful built-in microphone with DSP noise cancellation ensures your voice is heard loud and clear.

## Overview

The Nulaxy KM30 is a sleek Bluetooth FM transmitter designed to upgrade your car audio experience with a vibrant 1.8-inch color display, powerful microphone for hands-free calls, customizable treble and bass settings, and ultra-fast QC3.0 charging. Compatible with Bluetooth, USB, MicroSD, and AUX inputs, it also supports voice assistants like Siri and Google Assistant, making every drive safer and more connected.

## Description

Nulaxy KM30 In-Car Wireless Bluetooth FM Transmitter This cigarette usb adapter for car offers a wireless experience while driving. Enhances your journey on the road. Feature: Wirelessly transmit phone call from mobile phone to car FM stereo system. Switch to hands-free mode automatically from music playing status when receive call. Built-in Microphone.Support music playing from Bluetooth Devices, USB Flash Drive. Detect and display the voltage of car battery when power on. Icoming call number announcement.Supports last call redial. Function: Big Display Screen: Nulaxy KM30 bluetooth converter for car 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. It provides multi-solutions for your hands-free driving and in-car stereo streaming. Stronger Microphone for Better Hands-free Calls: KM30 wireless audio transmitter and receiver 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, and enjoy switching between treble and bass mode, the color spectrum auto-syncs with your music. QC3.0 Fast Charging: Radio adapter for car stereo bluetooth 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. Bring Voice Service in Your Car: You can stay fully focused on the road by using Siri or Voice Assistant to make phone calls, send texts or get driving directions. Nulaxy KM30 iphone fm transmitter for car radio brings voice service in your car. Package contents: 1x Car radio bluetooth transmitter 1x User Guide.

Review: Excelente transmissor - Há muitos anos que utilizo transmissores FM no carro para ouvir música, mas este equipamento superou todas as minhas expetativas! Excelente qualidade de som, com possibilidade de regular graves e agudos o que é pouco habitual, e contrariamente a outros equipamentos que já usei, não tem ruídos de fundo e a separação stereo é ótima! Felizmente temos em Portugal duas frequências que não são utilizadas por estações de rádio (87.5 e 108.0) e por isso, sintonizando numa destas frequências, podemos viajar todo o país sem necessidade de mudar de canal devido a interferências. As chamadas telefónicas são perfeitas e não tenho tido reclamações! Equipamento muito fácil de utilizar e o manual tira as dúvidas que possamos ter. Impossível ter melhor relação qualidade/preço. Recomendo!
Review: For £20 odd quid it's bloody marvellous - MP3 music problems solved in my old Shogun. - Oh my goodness - this little thing is great. My expectations for 20 odd quid were not high, but I needed something to play my MP3 collection through my car stereo (i have an older car with a tape player, a CD changer but no AUX input or Bluetooth. This worked out of the box with my 64 GB ExFAT USB stick (and I am able to browser folders / albums through its mini file browser) . Sound quality is fine - you'll want to tweak the Treble & Bass. I tuned it to an empty frequency at the lower end of the FM band (seems perfectly fine) - I can always easily retune it if I drive in London for example and get swamped by local stations etc. I have tested its mobile hands free Bluetooth mode - no problems - not top notch fidelity on voice, but absolutely fine. Value: five 5 stars Features: 5 stars Ease of use: 5 stars For £20'ish quid! It's bloody marvellous - music problems solved in my old Shogun.

## Features

- 【Large Color Screen】The Nulaxy KM30 Bluetooth FM Transmitter has a larger color screen and the color notes on the screen can beat with the music playing, bringing you dynamic music enjoyment. In addition, a larger color screen can provide more information for your driving, such as battery voltage, volume, incoming phone number, FM channels, track name and song duration, etc.
- 【Powerful Microphone for Hands-Free Calling】: A microphone is added to this Bluetooth transmitter, which greatly improves the ability of the Bluetooth transmitter to receive external sounds. When making a hands-free call, it can pick up your voice well and transmit it clearly to the other side of the call, giving you a pleasant calling experience.
- 【High and Bass Music Streaming】: With the two bass and TRF buttons, you can freely switch between treble and bass modes. And the Bluetooth transmitter supports four music playback methods, including Bluetooth/MicroSD card/USB stick/AUX.
- 【Smart QC3.0】: It comes with a QC3.0 charging port to provide high-speed charging and the charging speed is up to 4 times faster than standard chargers. And another USB charging port works as a charging port or U disk port for listening to music.
- 【Bring Voice Service to Your Car】This Bluetooth FM transmitter also supports Siri/Google Assistant for voice guidance, text, phone calls or directions. DSP noise cancelling technology reduces road noise and provides you with clear and crisp sound for hands-free calling.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08D3S85FW |
| Additional Features | Bluetooth Transmitter |
| AntennaDescription | Built-in FM antenna |
| Audio Input | USB, Bluetooth, Aux |
| Audio Output Mode | Stereo |
| Audio Output Type | FM Radio |
| Battery Type | Lithium |
| Best Sellers Rank | #77,301 in Electronics ( See Top 100 in Electronics ) #88 in Car Audio FM Transmitters |
| Bluetooth support? | Yes |
| Brand | Nulaxy |
| Color | Black |
| Compatibility Options | Compatible with devices using USB, Bluetooth or Aux connectivity |
| Compatible Devices | Speaker, Smartphone, Tablet, Car Stereo System, Laptop |
| Compatible with Vehicle Type | Car |
| Connectivity Technology | AUX, Bluetooth, USB |
| Connectivity technology | AUX , Bluetooth, USB |
| Connector Type Used on Cable | Auxiliary |
| Control Method | Touch |
| Control Type | Operation Control |
| Controller Type | Button Control |
| Customer Reviews | 4.3 out of 5 stars 18,124 Reviews |
| Data Link Protocol | Bluetooth |
| Display Type | Graphical_color |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) Metal |
| Hardware Interface | Bluetooth |
| Human Interface Input | Touchscreen |
| Includes Remote | No |
| Installation Type | Wireless |
| Item Dimensions L x W x H | 46L x 46W x 46H millimeters |
| 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 |
| Power source | Battery Powered |
| Product dimensions | 46L x 46W x 46H millimeters |
| Rechargeable Battery Included | Yes |
| Screen Size | 1.8 Inches |
| Special features | Bluetooth Transmitter |
| Supported Application | Bluetooth enabled apps |
| Supported Media Type | Micro SD Card, SD Card, USB Flash Drive |
| Supported Standards | Bluetooth |
| Unit Count | 1.0 Count |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** Nulaxy
- **Connectivity technology:** AUX, Bluetooth, USB
- **Material:** Acrylonitrile Butadiene Styrene (ABS) Metal
- **Power source:** Battery Powered
- **Special features:** Bluetooth Transmitter

## Images

![KM30 USB FM Transmitter, Bluetooth Car Radio Adapter with Powerful Microphone with 1.8 Inch Color Display, Supports QC3.0 Music Player, Treble and Bass - Image 1](https://m.media-amazon.com/images/I/71GXtvvTN1L.jpg)

## 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

### ⭐⭐⭐⭐⭐ Excelente transmissor
*by P***. on 28 September 2023*

Há muitos anos que utilizo transmissores FM no carro para ouvir música, mas este equipamento superou todas as minhas expetativas! Excelente qualidade de som, com possibilidade de regular graves e agudos o que é pouco habitual, e contrariamente a outros equipamentos que já usei, não tem ruídos de fundo e a separação stereo é ótima! Felizmente temos em Portugal duas frequências que não são utilizadas por estações de rádio (87.5 e 108.0) e por isso, sintonizando numa destas frequências, podemos viajar todo o país sem necessidade de mudar de canal devido a interferências. As chamadas telefónicas são perfeitas e não tenho tido reclamações! Equipamento muito fácil de utilizar e o manual tira as dúvidas que possamos ter. Impossível ter melhor relação qualidade/preço. Recomendo!

### ⭐⭐⭐⭐⭐ For £20 odd quid it's bloody marvellous - MP3 music problems solved in my old Shogun.
*by W***N on 13 May 2025*

Oh my goodness - this little thing is great. My expectations for 20 odd quid were not high, but I needed something to play my MP3 collection through my car stereo (i have an older car with a tape player, a CD changer but no AUX input or Bluetooth. This worked out of the box with my 64 GB ExFAT USB stick (and I am able to browser folders / albums through its mini file browser) . Sound quality is fine - you'll want to tweak the Treble & Bass. I tuned it to an empty frequency at the lower end of the FM band (seems perfectly fine) - I can always easily retune it if I drive in London for example and get swamped by local stations etc. I have tested its mobile hands free Bluetooth mode - no problems - not top notch fidelity on voice, but absolutely fine. Value: five 5 stars Features: 5 stars Ease of use: 5 stars For £20'ish quid! It's bloody marvellous - music problems solved in my old Shogun.

### ⭐⭐⭐⭐⭐ NULAXY Bluetooth transmitter
*by B***H on 22 June 2025*

I recently gifted my husband the NULAXY Bluetooth FM Transmitter, and it has been a fantastic addition to his car! The setup was incredibly easy; he just plugged it into the car's cigarette lighter, and it connected effortlessly to his smartphone via Bluetooth. One of the standout features is the crystal-clear sound quality. Whether he’s listening to his favorite music or taking calls, the audio comes through without any distortion. The built-in microphone picks up his voice clearly, making hands-free calling a breeze. The LCD display is a nice touch, showing the frequency and battery status, and the USB ports provide convenient charging options for his devices. He loves being able to stream his playlists and podcasts directly through the car's stereo system. Overall, the NULAXY Bluetooth FM Transmitter has made his driving experience more enjoyable and connected. It’s user-friendly, reliable, and an excellent value for the price. Highly recommended for anyone looking to upgrade their car audio setup!

## 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
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- 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 Belgium*
*Store origin: BE*
*Last updated: 2026-10-06*