Bluetooth aux in adapter amplifier + interference noise filter for Volvo (Attention: Depending on the model, the design of the article can change and no box is available with the same performance !!).
eBay
Car Bluetooth Receiver with Lossless Audio Quality MP3 Player, Car Adapter with Cigarette Lighter Socket and Charger
Aliexpress UK
Four-in-one: Bluetooth-compatible reception (RX), Bluetooth-compatible transmission (TX), microphone singing, FM radio four-in-one design. Support USB (USB flash drive) and TF card playback and transmission.
eBay
H7 Tv Bluetooth Headphone Wireless Headphone With USB Adaptor Headset Noise Cancelling Stereo Bass Earphone Foldable for TV PC
Aliexpress UK
Multipurpose: Supports car audio hands-free calls, connects the Bluetooth Compatible receiver to the car USB interface, and connects through Bluetooth Compatible to make calls while listening to music.
eBay
Xiaomi FM Transmitter Bluetooth 5.4 Hands-Free Car AUX Radio Modulator MP3 Player with Fast Charging Adapter Auto Accessories
Aliexpress UK
Special feature Bluetooth 5.3 & Dual Paring, Enjoy Wireless Streaming Music, Long Battery Life & Type-C Charging, HI-FI Music & Ultra-Clair Calls, Hands-Free Calling & Naigation Bluetooth 5.3 & Dual Paring, Enjoy Wireless Streaming Music, Long Battery Life & Type-C Charging, HI-FI Music & Ultra-Clair Calls.
eBay
Bluetooth 5.0 FM Transmitter Handsfree Car MP3 Player With 20W USB Super Quick Charge Adapter for Car
Aliexpress UK
The installation is very simple, just connect the transmitter to the socket and audio system, and pair it with Bluetooth-Compatible headphones/speakers to play music. Audio Receiver Adapter5.2 Bluetooth-Compatible AUX /OpticalFiber /Coaxial USB Wireless Audio Adapter 16 Bit for Audio/Amplifier.
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Car Bluetooth 5.4 FM Transmitter Receiver USB Wireless Adapter Auto Audio with LED Display Handsfree Calling Music For Car Radio
Aliexpress UK
Transform your audio experience with this premium Bluetooth 5.0 Audio Receiver Adapter. Perfectly designed for your Technics Hi-Fi Stereo, car audio system, or any device with a 3.5mm jack, this compact and lightweight adapter brings the convenience of wireless connectivity to your favorite devices.
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JSBM Car Bluetooth Aux Adapter With MIC Handsfree Microphone Cable For Renault Megane Espace Kangoo Laguna Updatelist Radio MP3
Aliexpress UK
Four-in-one: Bluetooth-compatible reception (RX), Bluetooth-compatible transmission (TX), microphone singing, FM radio four-in-one design. Support USB (USB flash drive) and TF card playback and transmission.
eBay
Bluetooth 5.0 Wireless Headphones with Foldable Design, HIFI Stereo Bass, Mic, USB Adapter for iPhone Gaming
Aliexpress UK
Audio Receiver Adapter5.2 Bluetooth-Compatible AUX /OpticalFiber /Coaxial USB Wireless Audio Adapter 16 Bit for Audio/Amplifier. Connecting To Old-Fashioned Speakers Or Amplifiers: Stereo audio component receivers can solve the problem of speakers without Bluetooth-Compatible and cannot be played using Bluetooth-Compatible through the AUX/RCA interface or fiber coaxial interface of old-fashioned speakers or amplifiers.
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P47 Bluetooth 5.0 Wireless Headphone Foldable HIFI Stereo Bass Earphone Kid Helmet Gift With Mic USB Adaptor For iPhone Game
Aliexpress UK