If you want the perks of owning a smartwatch without the hefty price, the Amazfit Balance Smart Watch 46mm is a good place to start. During Prime Day, the smartwatch that functions as a fitness tracker, body composition and health analysis and sleep tracker in one, is now $130, $20 off the original price. You can also connect to third-party fitness apps, like Strava and Google Fit, if you want more precise tracking during your workouts.