Car charger with Bluetooth headset + USB port + 3,5 mm audio output ensures smooth and safe ride in every vehicle.
Apple USB-C to 3.5mm Headphone Jack Adapter
USB-C to 3.5mm Audio and Charging Adapter
Bluetooth Aux Adapter for Car - ZOACHII Mini Wireless Audio Bluetooth – Dine-Asty Fleurs
Thought I'd share my solution to using my Bluetooth headphones with my Portal. Some of the earlier 3.5mm transmitters posted had poor battery life (4-5 hrs). Enter the Avantree Relay premium Bluetooth
USB-C to 3.5mm Audio and Charging Adapter
bluetooth® adapter wireless audio receiver with mic, Five Below
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USB Powered Bluetooth Adapter for AUX Inputs & Mini Smart Dual Port USB Car Charger Adapter 5V/2.1A And 5V/1A
ROCK Functional Car Charger With Bluetooth Earphone FM Transmitter Car – Rock12th
Car charger with Bluetooth headset + USB port + 3,5 mm audio output