It's great, I've got one for quite an old TV, which isn't Smart. Just needs a HDMI port and Internet. Is a bit fiddly to use though so depends on your Dad's ability and desire to use it. My Dad would struggle due to age and not being used to technology. You don't necessarily need Amazon Prime, but it is centered around it. You would probably need something, I have Netflix. Otherwise, I think Freeview would probably do the same, unless he likes games, using Apps and YouTube etc. Purchases are required to use it properly I.e. Upgrade free Apps, Curzon movies or Amazon Prime.