Connect Nav - Tom Tom sat nav

With my new Flair I get 3 yrs map updates but need to purchase the Speed Camera info. It's expensive at £169 for 3 yrs and wonder what you get?

If anyone has it can they tell me what do you get if you subscribe to Tom Tom speed cameras?

I assume both fixed and average speed camera info? Do you get speed limit info - and alerts when over?

How is it displayed/ vocalised? Eg. display countdown, audible warning?

How often is it correct?

How many times a year is it updated? How is it updated - by computer =>USB=> Car or OTA via your mobile?

Thanks