What is the size of the plug-in connector, and which car models is it compatible with?

Sizes: Diameter 24mm with spring clip, Depth 57mm This size fits most car models but is unsuitable for sockets in recessed areas like glove boxes. After use, hold the car’s socket with one hand and pull out the charger with the other to avoid damage.

How can I avoid or reduce noise?

For best sound quality, set the car audio volume below 50% before connecting your phone. Then, connect to the FM frequency & Bluetooth. Adjust the phone & BC91 volume first. If it's still too low, adjust the car audio system to reach the ideal level.

How do I match & switch frequencies?

Turn on car radio to blank FM frequency. Set the BC91 to the same frequency as the car radio. Long-press the BC91 rotate button until frequency flashes. Turn clockwise to increase, counter-clockwise to decrease.

The device isn't working/power isn't responding/display isn't showing/car audio isn't receiving sound/unable to play?

1) Ensure that the FM transmitter is on. 2) Verify the transmission frequency of the FM transmitter matches the frequency of the car's radio. 3) Unplug the BC91 and connect it again. 4) Confirm the files on the USB device are supported by the BC91.

How to pair the FM transmitter with your phone via Bluetooth?

Plug BC91 into car cigarette lighter socket to power on. Enable your phone's Bluetooth is on. Then search for 'BC91 and select 'connect'. Once connected, you can start playing music, using navigation, or making hands-free calls.

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Description

🚗⚡ Charge, Connect & Cruise in Style — The Ultimate Bluetooth Car Companion

POWER UP AT LIGHTNING SPEED - 54W total output with PD36W & QC3.0 18W ports keeps all your devices juiced simultaneously—never run low on battery again.
IMMERSIVE AUDIO WITH DEEP BASS - Activate one-touch bass boost and enjoy rich, vibrant sound that transforms your car into a premium concert hall on wheels.
ALL IN ONE SAFETY COMPATIBILITY - Built-in protections against over-current, over-voltage, and overheating, plus universal fit for 12V-24V vehicles—plug in with confidence wherever you drive.
SEAMLESS BLUETOOTH 5 3 CONNECTIVITY - Experience instant pairing and crystal-clear calls with the latest Bluetooth 5.3 tech, designed for flawless music streaming and hands-free navigation.
VIBRANT 5 COLOR LED BACKLIT INTERFACE - Stay effortlessly in control with stylish, eye-catching LED colors that enhance nighttime driving safety and aesthetics.

The Nulaxy 54W Bluetooth 5.3 Car Adapter Charger BC91 combines ultra-fast 4-port charging (PD36W & QC3.0 18W) with a wireless FM transmitter featuring deep bass sound and a vibrant 5-color LED backlit interface. Designed for professional millennials, it offers hands-free calling, voice commands, and broad vehicle compatibility (12V-24V). Its advanced Bluetooth 5.3 ensures rapid, stable connections for music and calls, while comprehensive safety protections keep you and your devices secure on every drive.

Specifications

ASIN	B0D1Y1424Y
Additional Features	54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls
AntennaDescription	Radio
Audio Input	Microphone
Audio Output Mode	Stereo
Audio Output Type	Speaker
Best Sellers Rank	#1 in MP3 Player FM Transmitters
Bluetooth support?	Yes
Brand	Nulaxy
Color	A-Black
Compatibility Options	Bluetooth devices, USB devices including USB Type C
Compatible Devices	Car Stereo System
Connectivity Technology	Bluetooth, USB
Connector Type Used on Cable	USB Type A, USB Type C
Control Method	Push Button, Voice
Control Type	Push Button Control & Voice Control
Customer Reviews	4.4 out of 5 stars 8,727 Reviews
Data Link Protocol	Bluetooth data link protocol
Enclosure Material	Polycarbonate (PC)
Hardware Interface	USB, USB Type C
Human Interface Input	Buttons
Includes Remote	No
Installation Type	Plug in Car Socket
Item Weight	0.07 Kilograms
Manufacturer	Nulaxy
Material	Polycarbonate (PC)
Model Name	BC91
Mounting Type	Plug in Car Socket
Number of Channels	1
Number of Ports	4
Power Source	Battery Powered
Rechargeable Battery Included	No
Special Feature	54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls Special Feature 54W High Power Fast Charging, Built-In Microphone, Colorful Lighting Effects, Deep Bass, Hands-Free Calls See more
Supported Application	Any Bluetooth-supported audio application
Supported Media Type	MP3, WAV, WMA, AAC, FLAC, USB Flash Drive
Supported Standards	Bluetooth 5.3
Voltage	12 Volts (DC)
Warranty Description	1 Year Manufacturer
Wireless Compability	Bluetooth

Reviews

L**.

27.11.2025

N**O

8.04.2026

D**R

21.03.2026

H**N

18.03.2026

K**T

19.02.2026

D**.

19.02.2026

G**D

24.04.2026

M**Y

2.04.2026

S**O

18.06.2024

A**U

15.07.2024

I**N

19.11.2024

M**L

18.11.2024

Y**Z

25.02.2026

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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TrustScore 4.5 | 7,300+ reviews

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Nulaxy 54W Bluetooth 5.3 Car Adapter Charger 4-Port Fast Charging [PD36W & QC3.0 18W], Wireless Radio FM Transmitter with Deep Bass Player, 5 Colors LED Backlit, Hands-Free Calling, Support USB Drive

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