UGREEN Aux to Bluetooth 6.0 Car Adapter with LDAC, 3.5mm Aux Adapter for Car Built-in Microphone, Car Bluetooth Audio Receiver for Hands-Free Calls Compatible with Car Speaker & Home Audio (85428)
UGREEN Aux to Bluetooth 6.0 Car Adapter with LDAC, 3.5mm Aux Adapte...
UGREEN BT521 | Model 85428 | Bluetooth 6.0 AUX Receiver
Upgrade Your Car or Speaker to Bluetooth Hi-Res Audio
Add wireless music streaming and hands-free calling to any car stereo, speaker, amplifier or home audio system with a 3.5mm AUX input.
Wireless Audio for Existing AUX Systems
No need to replace your car stereo or speaker. Just plug into AUX, power via USB and pair your phone.
Bluetooth Version
Hi-Res Audio Codec
Wireless Range*
Devices at Same Time
*Range and audio performance may vary depending on phone model, car/speaker system, placement, obstacles and wireless interference.
Make Any AUX Audio System Smarter
The UGREEN BT521 Bluetooth 6.0 AUX Adapter is made for cars, wired speakers, amplifiers and home audio systems that already have a 3.5mm AUX input but do not have built-in Bluetooth. It lets you stream music, podcasts, navigation audio and calls wirelessly from your phone, tablet or laptop.
Bluetooth for Car AUX
Upgrade older car stereos with wireless music and hands-free calling using the existing 3.5mm AUX port.
LDAC Hi-Res Audio
Supports LDAC, AAC and SBC codecs for better wireless audio quality with compatible source devices.
Built-in Microphone
Take hands-free calls through your car or speaker system while the built-in microphone captures your voice.
Dual Device Connection
Connect two devices at the same time, useful for shared cars, family use or switching between two phones.
Why Choose UGREEN BT521 Bluetooth AUX Adapter?
The UGREEN BT521 85428 Bluetooth AUX Adapter is a compact receiver that brings modern Bluetooth audio to existing wired audio systems. It is ideal for cars, home speakers, amplifiers and audio systems with a 3.5mm AUX input.
With Bluetooth 6.0, the adapter is designed for stable pairing and smooth wireless streaming. The addition of LDAC codec support makes it a stronger choice for users who want better wireless sound quality from compatible Android phones or supported audio sources.
The built-in microphone enables hands-free calling, while plug-and-play USB power means there is no battery charging routine. The elastic cable design helps reduce cable mess inside the car and gives flexible placement.
Simple 3-Step Setup
Designed for easy everyday use in cars, home speakers and AUX-enabled audio systems.
Connect to AUX
Plug the 3.5mm AUX connector into your car stereo, speaker or home audio AUX input.
Power via USB
Connect the USB plug to a car USB port, USB charger, power bank or compatible USB power source.
Pair & Play
Pair your phone using Bluetooth and enjoy music, calls, podcasts and navigation audio wirelessly.
Perfect For
Cars Without Bluetooth
Add wireless music and hands-free calling to older cars with an AUX input.
Home Speakers
Turn wired speakers and amplifiers into Bluetooth-enabled audio systems.
Daily Commutes
Listen to music, calls, maps and podcasts through your car speakers.
Shared Cars
Dual-device support makes it convenient for two users to stay connected.
Important Compatibility Note
This is a Bluetooth receiver for AUX-enabled car stereos, wired speakers and home audio systems. It is not a Bluetooth transmitter for sending audio to wireless headphones.
Your car or audio system must have a 3.5mm AUX input and a USB power source. LDAC performance requires a compatible source device and proper Bluetooth audio settings.
Product Specifications
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Frequently Asked Questions
What does the UGREEN BT521 do?
It adds Bluetooth receiving function to AUX-enabled car stereos, wired speakers, amplifiers and home audio systems.
Does it support LDAC?
Yes, it supports LDAC along with AAC and SBC. LDAC requires a compatible source device.
Can I use it for hands-free calls?
Yes, it has a built-in microphone and supports hands-free calling through the connected car or speaker system.
Does it need battery charging?
No routine charging is required. It is powered through a USB power source while in use.
Can two phones connect at the same time?
Yes, it supports connection with two devices at the same time and can remember up to five paired devices.
Can it transmit audio to Bluetooth headphones?
No. This is a Bluetooth receiver for AUX audio systems. It receives Bluetooth audio from a phone and outputs it through AUX.
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