1 hour of talk time? What's the point? You talk to someone and then have to take off your watch and wait around 2 hours to get it back to full charge.
Well in that case then, do not talk on your Apple Watch series 3? pretty obvious isn't it?
Plus I do not see many people talking on their Apple Watch because either you look like an idiot raising your wrist to talk, as though you are imitating Dick Tracy...Dick being the operative word.
Or you are walking along normally while talking and people do not see/realise you are talking to your Apple Watch and think your an idiot. Next thing you know you get sectioned.
There you are stuck in a padded cell wearing a white coat with arms that fastened round the back telling the staff "I was talking on the phone, honest, I was". They reply "yeah sure..on your IMAGINARY phone" lol.
or thirdly even if people know that you are using your Watch to make phone call do you want the whole world knowing your business?
Imagine this;
You are sat in your favourite local coffee shop where the staff know you. You are sat there drinking a coffee and trying to look cool. Your Watch rings and you answer it, again trying to look cool and show off your latest 'toy'.
You: "Hello"
Caller: "Hello, can I speak to Mr Jones"
You: "Yes, speaking"
caller: "Hi, this is Dr Hartman, the results of your test are back and they're positive. You have Systo-glimak-organocompy syndrome, so I recommend telling all your sexual partners as soon as you can"
You then hurriedly try to end the call, blushing redder than an embarrassed lobster and now looking like a ****head.