---
product_id: 390335334
title: "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"
brand: "nulaxy"
price: "$1499"
currency: MXN
in_stock: true
reviews_count: 10
category: "Nulaxy"
url: https://www.desertcart.mx/products/390335334-nulaxy-bluetooth-fm-transmitter-for-car-wireless-car-bluetooth-v5
store_origin: MX
region: Mexico
---

# QC3.0 Fast Charging - 80% in 35 mins 2.4-inch Big Color Screen BASS & TRE Booster for custom sound 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

**Brand:** nulaxy
**Price:** $1499
**Availability:** ✅ In Stock

## Summary

> 🚗 Tune In, Charge Fast, Drive Smart — Your Car’s Ultimate Bluetooth Upgrade!

## Quick Answers

- **What is this?** 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 by nulaxy
- **How much does it cost?** $1499 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/390335334-nulaxy-bluetooth-fm-transmitter-for-car-wireless-car-bluetooth-v5)

## 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

- • **Rapid Dual-USB Charging:** Power up your devices swiftly with Qualcomm Quick Charge 3.0 technology.
- • **Mood-Setting LED Ambiance:** Choose from 7 colors or dynamic modes to personalize your car’s vibe.
- • **Seamless Hands-Free Calls:** Spin to answer or reject calls and use voice commands for safer driving.
- • **Vibrant Big Color Display:** Stay informed with caller ID, FM frequency, and battery voltage at a glance.
- • **Immersive Audio Customization:** Adjust bass and treble with advanced noise cancellation for crystal-clear sound.

## Overview

The Nulaxy KM28 Bluetooth FM Transmitter transforms your car audio experience with a vibrant 2.4-inch color screen, Qualcomm QC3.0 fast charging, and versatile connectivity including Bluetooth 5.0, TF card, USB, and AUX. It features hands-free calling with noise cancellation, customizable bass and treble boosters, and 8 LED backlight modes to elevate your drive. Designed for millennial professionals seeking convenience, style, and superior sound on the go.

## Description

desertcart.com: 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 : Electronics

Review: It works as advertised. - This is a great product. It does what it promises. Audio is full. (the built in Bass & Treble are minimal, luckily my radio has a built in EQ which further tailors the sound. Make sure to turn up the volume on the phone all the way. Turn the volume on the Nulaxy up all the way. Then starting from the lowest position possible on your radio head unit, turn the volume up where it sounds good/loud enough. FM transmitter is strong, but it is very close to the antenna itself, I realize it is impossible to find good FM transmitters since the FCC limited power on them years ago. The mounting clip is awesome. Different positions abound. The display is colorful and full of information. Time will tell how long this lasts. ------Only thing I do not like? High chance of fail point, where the ciggy lighter cord enters into the Nulaxy unit. Would have been better it was a jack so it can be removed and absorb abuse much better. If the wire bends too much, it WILL fail one day and is not a self serve replacement part of the amateur/common user! - Highly recommended for the price!
Review: Good unit. - Got this a few years ago and it's great and still works. Easy to install and hide the cord.

## 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 |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #23 in MP3 Player FM Transmitters |
| Customer Reviews | 4.2 4.2 out of 5 stars (4,871) |
| Date First Available | November 16, 2021 |
| Item Weight | 8 ounces |
| Item model number | KM28 |
| Manufacturer | Nulaxy |
| Product Dimensions | 3.23 x 2.05 x 1.69 inches |

## 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

![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 - Image 1](https://m.media-amazon.com/images/I/71fnvQaGttL.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

### ⭐⭐⭐⭐⭐ It works as advertised.
*by R***K on June 30, 2024*

This is a great product. It does what it promises. Audio is full. (the built in Bass & Treble are minimal, luckily my radio has a built in EQ which further tailors the sound. Make sure to turn up the volume on the phone all the way. Turn the volume on the Nulaxy up all the way. Then starting from the lowest position possible on your radio head unit, turn the volume up where it sounds good/loud enough. FM transmitter is strong, but it is very close to the antenna itself, I realize it is impossible to find good FM transmitters since the FCC limited power on them years ago. The mounting clip is awesome. Different positions abound. The display is colorful and full of information. Time will tell how long this lasts. ------Only thing I do not like? High chance of fail point, where the ciggy lighter cord enters into the Nulaxy unit. Would have been better it was a jack so it can be removed and absorb abuse much better. If the wire bends too much, it WILL fail one day and is not a self serve replacement part of the amateur/common user! - Highly recommended for the price!

### ⭐⭐⭐⭐⭐ Good unit.
*by S***N on December 27, 2025*

Got this a few years ago and it's great and still works. Easy to install and hide the cord.

### ⭐⭐⭐⭐ 👍 👍 👍 👍
*by B***S on January 2, 2026*

Works really good and easy to use. I bought this for my work vehicle because i got tired of bouncing radio stations as in on the road and it's a really good product. Easy to connect and Sound is nice and clear with good volume level unlike most which are to low and distorted to hear music clearly. It's pretty compact but not to small to small to see the screen and the lights make it look pretty neat.

## 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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**Shop now:** [https://www.desertcart.mx/products/390335334-nulaxy-bluetooth-fm-transmitter-for-car-wireless-car-bluetooth-v5](https://www.desertcart.mx/products/390335334-nulaxy-bluetooth-fm-transmitter-for-car-wireless-car-bluetooth-v5)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-10*