Bluetooth 4.1 version. support 3.0 . 2.0 4.0 player.The bluetooth module is made for radioJust plug the white connector into the socket back of your radioYou can just Insert this item to the back radio then Connect the red wire to 12V+, the black wire to 12V.Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to through car speakers.Item Type:Bluetooth Car KitSpecial Features:car radio bluetooth audioItem Weight:0.06kgBluetooth type:4.1Fitment:For 3 2006 to up ONLYFor 6 2006 to up ONLYFor 5 2006 to up ONLYFor 2 2006 to up ONLYFor MX5 2006 to up ONLYFor RX8 2006 to up ONLYColour:BlackMaterial:PlasticPackage Contents:10 * Bluetooth AUX audio cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.