Review on Bluetooth 5.0 Aux Car Adapter with Hands-Free Call, Dual USB Ports Charger - US Patent No. US 10,272,845 B2 by Kuldip Roberts

I'm not easily impressed but this bluetooth receiver is fantastic, especially for the price. Both audio streaming and phone call quality (both ends) are excellent, much better than I honestly expected. The integration with Siri on my iPhone is as good as it gets given Siri's limitations. I don't know about battery life as I have mine set to always be plugged into the aux port and charged (when the ignition or accessory is on) with a similar cable to the one that comes with the unit will, except I have a 90 degree plug that gets its power from a plug tucked under the center console. Regardless of the product, I had to do some electrical work to add an extra connector to my 1993 stock Miata radio. This product made the job worthwhile and upgraded my car radio very economically for 25 years.