Question about Samsung Galaxy Watch4 Classic

That's right, no need to take your smartphone with you. You can use standalone GPS, Gmaps or whatever, Strava, be called and call, SMS, streaming music paired with your headphones. And you can manage transparency and noise reduction modes if you have pro buds. NFC payment

Yes, that's right. I sometimes don't use my phone any more - one pair of buds is enough for the day.