Tom Tom or equivalent for footpaths

Does anyone know if theea gadget for walkers which will give verbal instructions about country walking?

I know that I can use an OS map, but they are very pricey and are awkward to fold and refold. We've got a big AA book of country walks but the instructions rapidly go out of date and are often unclear, the same with all those books of country walks which we've acquired over the years.

I would love that calm authoritative telling us to 'take the path directly to the right' or 'turn around when possible' it would save a heap of arguments er discussions.