The Best Bluetooth Kits for Every Car Stereo

By Wirecutter
Besign BK01 Bluetooth Car Kit
"Our pick: Best Bluetooth adapter for cars with an aux-in jack"
GOgroove FlexSmart X2
"Also great: Best FM Bluetooth transmitter"
Avantree CK11 Wireless Handsfree Visor Car Kit
"Also great: Best Bluetooth speakerphone"