I was previously all excited about my Samsung Galaxy 42mm watch, which I still like a lot paired with my Note 10+ phone.
But over time, I noticed that despite all the many features, I really only use it for very limited functions most of the day:
1) The ability to choose custom watchfaces to have one that has giant font sizes so I can read the time/date info easily without glasses on. My Citizen Ecodrive analog watches are great, but I simply cannot read the small fonts anymore.
2) The great alert notifications so that anything that flashes on my Note 10+ phone automatically flashes on my Galaxy watch simultaneously (eg: text, email, calendar appts, and many others). The reason this is important to me is so with a flick of my wrist, I can instantly see whether an alert is important enough to pull out my phone out of my pocket for further inspection or not. My watch saves me from having to constantly pull out my phone from my pocket wondering whether something is urgent or not. That alone is worth $$. Even better, if it's an alert that is important enough to respond quickly, I can simply choose a drop down menu of saved preset messages to send through my watch, such as "Can't talk now", "Will be there in 5 min", "Please leave me a voice message", etc. Love sending those preset saved messages from my watch, so convenient! That means I can leave my phone in my pocket. Most of the time I just simply choose a smiley emoji to reply back to let the person know I received their message.
3) The daily wake up alarm app on the watch is great! I use it daily to give me an audible tone along with vibration to wake me at 5:20am Monday to Friday, but turned off on weekends. Great app!
4) Step counter works great, also use the heart rate monitor too.
So even though my watch can do a bunch more stuff, those are the above items most important to me after using my Galaxy watch for the past couple months.
Plus my 42mm Galaxy watch (Bluetooth only) has great battery life. I pull the watch off my Samsung Duo charger at around 5:30am. At 5:30pm, some 12 hours later, my battery life is still around 85% charge left. If necessary, I can use the Power Share function of my Note 10+ phone to wirelessly top off my watch with extra juice.