Why is it difficult to turn on this Bluetooth 5.3 car adapter sometimes? What can I do to solve this issue?

Cause using it in very cold conditions might temporarily cause your device to turn off or difficult to turn it on. You can use a hair dryer to blow it for 1-2 minutes via the hot air, and then press the button for turning it on.

What to do if the Bluetooth audio does not work when calling?

It is necessary to select on the phone whether the audio is output from the phone or from Bluetooth when calling.

UGREEN Bluetooth Adapter 5.4 for Car, Bluetooth Receiver 3.5mm Jack with Built-in Microphone for Car Stereo/Speaker/Home Stereo/Wired Headphones,15H Battery Life

UGREEN Bluetooth Adapter 5.4 for Car, Bluetooth Receiver 3.5mm Jack with Built-in Microphone for Car Stereo/Speaker/Home Stereo/Wired Headphones,15H Battery Life

Product ID: 509891477

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Details

Special features
Hands-free Low
Brand
UGREEN
Connectivity technology
AUX
Power source
Battery
Material
Plastic

🎤Built-in mic for hands-free calls

🔊Bluetooth 5.4 for crystal-clear audio

🔋15H battery life with fast charging

Description

🚗🔊 Elevate your drive with wireless freedom and crystal-clear sound!

ALL DAY MUSIC PLAYBACK - Enjoy up to 15 hours of continuous music or 200 hours standby on a single charge with rapid recharge support.
PLUG PLAY VERSATILITY - Instantly transform any 3.5mm aux port into a wireless Bluetooth hub for car stereos, home speakers, or wired headphones.
SEAMLESS BLUETOOTH 5 4 CONNECTIVITY - Experience ultra-stable, high-speed wireless audio with enhanced signal-to-noise ratio over 90dB.
DRIVE SAFELY WITH HANDS FREE CALLING - One-touch answer button and built-in microphone keep your focus on the road while staying connected.
DUAL DEVICE PAIRING FOR SOCIAL SHARING - Connect two devices simultaneously and effortlessly switch between calls and playlists with friends.

The UGREEN Bluetooth Adapter 5.4 is a cutting-edge 3.5mm Bluetooth receiver designed for cars, home stereos, and wired headphones. Featuring the latest Bluetooth 5.4 technology, it delivers superior audio clarity and stable connections with a signal-to-noise ratio above 90dB. Its built-in microphone and one-touch button enable safe hands-free calling, while a robust 15-hour battery life ensures uninterrupted music playback. Supporting dual device connections, it offers seamless switching between devices, making it perfect for multitasking professionals and social settings alike.

Specifications

Control Method	Touch
Control Type	Volume Control
Human-Interface Input	Buttons
Connector Type Used on Cable	USB
Number of Ports	1
Hardware Connectivity	Bluetooth, Bluetooth 5
Lithium Battery Weight	2 Grams
Item Weight	0.08 Kilograms
Item Dimensions L x W x H	3.7"L x 3.7"W x 0.6"H
Compatibility Options	Speaker, Smartphone
Compatible Devices	Smartphone, Speaker
Installation Method	Plug In
Includes Remote	No
Color	Black
Outer Material	Plastic shell
Additional Features	Hands-free Calling, Noise Cancellation, Intelligent Noise Reduction, Bluetooth 5.3, Auxiliary Bluetooth Adapter, 3.5mm AUX Port, Navigation, Long Battery Life, Built-in Mic, Bluetooth to Aux, Car Audio Adapter
Material Type	Plastic
Voltage	3.7 Volts
Number of Batteries	1 Lithium Metal batteries required. (included)
Rechargeable Battery Included	Yes
Power Source	Battery Powered
Number of Lithium-ion Cells	1
Lithium-Battery Energy Content	300 Milliampere Hour (mAh)
Supported Battery Types	Lithium-Ion
Lithium-Battery Voltage	3.7 Volts
Bluetooth support?	Yes
Wireless Compability	Bluetooth
Connectivity Technology	Bluetooth
Audio Output Mode	Stereo
Number of Channels	2
Audio Input	3.5mm AUX Port

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