A Garmin watch is absolutely designed for wearing all the time, even when sleeping. You might prefer not to for reasons of appearance or because there are features of some other smart watch that you like, but Garmin is fine for what I use it for and does notifications etc. The battery life was a game changer for me (as an Apple Watch switcher) since it's now something I just don't worry about whereas with Apple Watch it was a daily thing and it let me down on several runs too.