I have one of the Pure DAB kits that do both bluetooth and DAB, it comes with a little wireless controller that looks like a Parrot you can mount anywhere. I've had mine a year and still haven't had to change the AAAs it comes with. I paid £150 for mine and think it was worth every penny, just plugs into the 3.5mm jack or will broadcast via FM.
https://www.ebay.co.uk/itm/Pure-High...frcectupt=true