Garmin Vivosmart HR Activity Tracker

Not all exercise is created equal, but you'd be hard-pressed to tell by the readouts on most monitors. The Garmin Vivosmart HR Activity Tracker uses an integrated barometric altimeter and heart rate monitor to give you credit for activity performed at higher altitudes, as well as exercise that gets your heart pumping. Its daylight-readable display is always on, yet it can run up to five days on a single charge, while doing all the expected fitness tracker stuff like displaying notifications, tracking steps, and giving you a nudge when you've been sitting for too long.