Seicane is pretty feature loaded.

What it doesn't have internal for under $400 you can add to it such as dvr, digital tv, dab+ if your overseas, ibus adapter to control all the factory features and some coding, etc.

The apple carplay is the iffy part. I don't have an iphone so I have no clue what it can and cant do with that.

I personally prefer my phone to only be involved with making phone calls. I let the radio do the rest so carplay is useless to me. So as long as the radio has Bluetooth to make phone calls with it then Im good phone wise.

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Aftermarket E53 Radio Install