Ok so you look on that well known auction site and there are lots around for little money .
I did not want one that utilised your fag lighter and stuck out like a frankenfurter .
And seeing as I have AUX input , I wanted something that could stream my music via Bluetooth from my fone .
So read a review and saw a vid on YouTube ,with this guy I stalling this in 10 mins flat .
Saw one on the auction site , and brought it .
Well today I'm amazed is an understatement .
Comes in a small box . Head unit no bigger than a watch face .
Comes with micro usb power lead . ( short ) but if you want can buy longer ones on that auction site .
Fag lighter power plug , and a 3.5mm lead both male ends .
And a extension lead for the above ( male female )
And basic instructions
Within 5 mins had it set up and streaming music ( Bluetooth pairing is a doddle )
The only thing is with my phone ( Microsoft lumia 550 )
You can't change tracks or stop music ,unless you have the lock screen on the fone .
So once working , I installed it in a place where it was nice and tidy and no cables showing ( see pics )
Also phone wise it works the microfone is built in , but sound from caller co es out of speakers .
If you want it tidy like me basic tools ( battery drill 10mm wood bit ( not spade type )
And a small torx bit yo unscrew side panel on transmission tunnel.
And some thick wire to get cable from dash to side panel ( fishing)
Well worth the £22,00 plus postage . 10/10
I might as well state . I'm not affiliated with Avantree and do not get paied .
This is my own personal review , for people who may want something cheap but effective .