All are great recommendations. Coach AJ also mentions about a site you can read more info about this in the Athlete’s guide (DC Rainmaker) – see link https://www.dcrainmaker.com/2018/11/sports-technology-buyers-guide-recommendations.html
As others have mentioned, I think it really depends on how much you are willing to spend and what you are looking for. If you know that you want to continue doing triathlons, then I highly recommend in investing on a much better watch that is going to last you a long time. Otherwise, you might now need all the features a Tri-specific watch comes with.
I have the Garmin 935 and absolutely love it. I use it for EVERYTHING. You can pretty much track about every single workout machine at the gym, track you sleep and how many times you wake up in the middle of the night, or really analyze your runs, bike rides, or swimming.