Standalone smart watches

Hi. In my opinion, social media is killing my time and I want to get rid of it. However, I must listen to music and make calls.

I am planning to buy a smart watch;

I should be able to listen to music, using my bluetooth headphones connected

I should be able to answer calls, make calls using the watch, using my headphones to listen. ( Without the need of a phone connected )

It should be a bit sportive, it should have classic apps like heart beat measure like most watches

It should have a touchscreen, I mean, there can be home button and go back button, and even some other buttons, but I want to be able to control some things by touching on the screen too.
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So basically a smart watch with a sim, mic, bluetooth. I don't want to carry my phone.

< 300$/

they have embedded sim..... I'm not living in a technologically developed planet I can't pay it here, there is no T-Mobile here, I have to put in my own SIM

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Dave, I can't click on this : http://prntscr.com/ov13un

it gives me error.

Samsung is the way

The gear s3 is pretty independent but you can't install apps like whatsapp on it

I should be able to listen to music, using my bluetooth headphones connected

It should be a bit sportive, it should have classic apps like heart beat measure like most watches

Take a look at this.