Bluetooth car kits let you talk hand-free while driving. Consumer Reports checked out GoGroove FlexSmart X2, Belkin CarAudio Connect AUX, Jabra Journey and Motorola Roadster 2.

while the others can be used for charging the devices you connect to it. We think that every Bluetooth car kit that draws power from USB should have this kind of charger built right into it.

The best Bluetooth car adapters ensure you can enjoy hands-free audio in your car — no matter how low-tech your car might be. You don't have to spend a fortune on this process, and the only ...

You'll get better sound with one that plugs into a car's auxiliary audio input, if available, than by listening through an FM modulator. For about $120, you can link a Bluetooth device to the car ...

A Bluetooth transmitter lets you play music from your devices in an older car, and usually adds USB charging, too. Pho ...

The UGREEN Bluetooth Transmitter and Receiver will modernize any old device with a 3.5mm audio input or output. It's on sale for just $14.99!

These days Bluetooth-based gadgets are everywhere, including for car and solar batteries ... many of these devices will happily pass your location and other information along to remote servers.