Yes, they can't! They don't even seem to notice when their watch needs a new battery. I mentioned this to someone, and they said "I don't know", and I remarked "I'm letting you know that your watch needs a new battery" then they replied "Maybe"
How interesting--it never occurred to me that there are people who can't tell time on a regular watch with hands. I guess I'm one of those "older people"-- I can't imagine not wearing a watch.
I used to wear a watch ever since I was a child, then one of my watches ran out of battery, and another and so on until the last one. I was too busy to have them changed that I don't even know where they went