Ideal running companion Garmin Forerunner 245 $220 at Amazon Pros Built-in GPS Lightweight design Advanced running metrics Training status, load, effect Pulse Ox & Body Battery Cons Lacks altimeter No Garmin Pay Music version costs more If running is your true passion, you can't go wrong with this GPS running smartwatch. In addition to advanced running dynamics, this model also offers extensive training features, a Pulse Ox sensor, Body Battery energy monitoring, and more. Perfect lifestyle watch Garmin Vivoactive 4 From $264 at Amazon Pros Built-in GPS Pulse Ox & Body Battery Garmin Pay Two size options Music comes standard Cons Lacks advanced running dynamics Shorter battery life in GPS mode For those who like doing many sports rather than just one, the Vivoactive 4 will serve you well. It's equipped with over 20 sport modes, after all. You also get two size options, a touchscreen, an altimeter, and Garmin Pay. Garmin Forerunner 2