Here is the smartwatch that I wear daily in my practice as a critical care pharmacist: The Pebble Time Round. This smartwatch works with apple and android phones. It is round, thin, light, and has great battery life.
It comes in several styles and colors and most importantly, it actually looks like a watch and not a rectangular hockey puck like some other smartwatches do. I now use my Pebble Time Round to time epinephrine doses during codes – this leaves my smartphone free to check IV compatibility, medication doses, or patient data.