Bluetooth 5.0 Car FM Transmitter T-04 – Wireless Music and Safe Calls in Your Vehicle
Want to listen to your favorite music from your smartphone, but your car stereo doesn't have Bluetooth? The Bluetooth 5.0 Car FM Transmitter T-04 (SKU: 74-158) is a complete and affordable solution that instantly upgrades the functionality of any, even the simplest, car stereo. This smart interface acts as a bridge between your phone and your car's audio system, allowing you to wirelessly stream music and safely make hands-free calls while driving.
Thanks to the latest Bluetooth 5.0 + EDR technology, the transmitter provides an extremely stable connection without interruptions, faster data transfer and superior sound quality. Simply insert it into your car's 12V socket (cigarette lighter), set the same FM frequency on the transmitter and radio, and you are ready to enjoy the modern digital experience.
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Why choose Bluetooth FM transmitter T-04?
Modern technology in the car is no longer a luxury reserved only for newer vehicles. With the T-04 car FM transmitter, you will keep your original car radio, while gaining all the key functions of modern multimedia systems. The device is designed with safety, ease of use and maximum functionality in mind on every journey.

Wireless music streaming (A2DP): Support for the A2DP protocol allows you to stream high-quality stereo sound directly from your phone (Youtube, Spotify, Tidal or stored music) to your car speakers.
Safe hands-free calling: The built-in microphone allows you to take calls without taking your hands off the wheel, making your driving safer and more compliant with traffic regulations.
Crystal-clear, noise-free sound: CVC (Clear Voice Capture) noise reduction technology, combined with Full Duplex mode, effectively filters out ambient noise and echoes, ensuring clear phone conversations and clear music sound.
Dual USB ports for charging and playback: The transmitter is equipped with two USB ports. While you use one port to quickly charge your portable devices (phone, tablet, navigation), the other also allows you to play music directly from a USB stick.
Automatic pairing: After the first successful manual setup, the transmitter will automatically connect to your smartphone every time you enter the vehicle.

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Technical specifications and features
The T-04 Bluetooth FM transmitter combines a compact design and powerful technical components that ensure long service life and reliable operation:

Bluetooth version: V5.0 + EDR for stable connection without delays
Audio frequency range: 20Hz - 20KHz for full bass and clear highs
Operating voltage: 5V
Current consumption: Working current up to 45 mAh (max.), standby current up to 25 mAh (max.)
Operating frequency: 2.402 - 2.480 GHz
Wireless range: Bluetooth connection working range up to 10 meters
RF power: 4dBm
FM frequency range: Wide range from 87.5 to 108 MHz to find a clear free frequency
Connector: Suitable for standard 12V car sockets

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Easy installation in three steps
You don't need any tools or technical knowledge to get started. Installation is quick and easy:

Insert the transmitter into the 12V cigarette lighter socket in your car.
Find a free FM frequency on your car radio (where there is no radio station, just noise) and set the same frequency (between 87.5 and 108 MHz) on the FM transmitter.
Turn on Bluetooth on your phone, search for the device and connect. Your favorite music is ready to play!

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Frequently Asked Questions (FAQ)
How to choose the best FM frequency for clear playback?
For the best sound quality without interference, we recommend that you find a frequency on your car radio that is not broadcasting any local or national radio stations (you will only hear a steady noise on this frequency). Then set this same frequency on your T-04 Bluetooth transmitter.
Can I charge my phone and play music at the same time using the USB ports?
Yes, the device is equipped with two USB ports. One of them is dedicated exclusively to charging your devices (such as smartphones or tablets), while the other port supports both charging and data reading, allowing you to play music directly from a USB storage medium.
Is the transmitter compatible with all smartphones?
Yes, Bluetooth 5.0 technology is backward compatible. This means that the T-04 transmitter will connect seamlessly with all iOS (iPhone), Android, Windows and other devices that support Bluetooth connectivity.


Responsible persons:
BLOW ELECTRONICS - Prolech Spółka z ograniczoną odpowiedzialnością, Stary Puznów 58B, 08-400 Garwolin, Poland, sklep@prolech.com.pl (+48) 25 684 8888
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Connect the FM transmitter to the vehicle's 12 V socket.
• Turn on Bluetooth on your mobile phone and connect the device to the transmitter.
• Set the transmitter and car radio to the same free FM frequency.
• Play music or make a hands-free call.
• Use the USB ports to charge compatible devices.

Useful tips for work:
• Select an FM frequency without interference for better sound.
• Before driving, check that the Bluetooth connection is established.
• Do not overload USB ports.
• Unplug the device from the outlet after use if the vehicle does not have an automatic power cut-off.

Warnings:
⚠️ Only use the device in a suitable 12 V vehicle socket.
⚠️ Do not change device settings while driving.
⚠️ Do not use a damaged transmitter or cable.
⚠️ Do not use USB ports for devices that require more power than allowed.
⚠️ Do not expose the device to water, moisture or high temperatures.
⚠️ Before use, check that the device is securely seated in the socket.

Same summary

Bluetooth 5.0 car FM transmitter with dual USB port is a practical choice for drivers who want a wireless connection between their phone and car radio and fast charging of devices. Due to its support for FM broadcasting and hands-free calling, the product is particularly suitable for use in a car, where ease of use and safe communication while driving are important. It may be less suitable for those who will not use the transmitter in the car or who are satisfied with other forms of hands-free devices without an FM transmitter. The additional USB output allows simultaneous charging of multiple devices, which makes it easier to use on longer trips.

Recommendation source: Enaa guides and team experiences.

User view

Typical users of this FM transmitter are drivers who want to safely transmit their calls and music from their smartphone through their car radio, without unnecessary cables or additional vehicle modifications. In practice, it is very useful for those who would like to quickly switch between listening to music and making hands-free calls, with easy controls at their fingertips.

Users often trust the Blow brand, as their portfolio includes several functional connectivity and car electronics solutions that are easy to use and affordable.

Why buy at Enaa

At Enaa, we select products that meet the most common needs of telephony users and offer clear classification by category so you can quickly find the right solution for hands-free calling. There are also professionally prepared filters that make it easier to compare different models and help make your choice easier.

Answers to frequently asked questions

Will the FM transmitter be compatible with all cars?

The FM transmitter generally works with all car radios that can receive FM signals; if you have a classic FM radio in your car, the connection will usually work smoothly.

Is it possible to make a phone call and charge a device via USB at the same time?

Yes, the FM transmitter allows hands-free calling and simultaneous charging of one or two devices via USB connection.

Is the connection to the phone stable even on long journeys?

Bluetooth 5.0 provides a stable connection for most new smartphones even on long drives, as long as the FM frequency is not interfered with by other transmitters or radio stations.

Can I use the FM transmitter outside the car?

The FM transmitter is designed primarily for use in a vehicle where a 12V socket is available; for use at home or in the office, we recommend other types of hands-free devices that are adapted for stationary use.

What to do if the car radio detects noise or interference in the transmission?

In this case, try selecting another FM frequency where there is no radio station, or reduce the distance between the transmitter and the car radio antenna for clearer sound.

Description updated: April 2026