SAVE $40: As of May 14, the Garmin Vivofit Jr. 3 is on sale for only $49.99 at Amazon — just in time for summer break. That's a saving of $40 and its best price on record.

It's easy for kids to rack up those screen time hours once school lets out for the summer. But a fitness tracker can help balance those hours with some necessary movement and one of our favorites designed for kids is on sale for its best price ever.

As of May 14, the Garmin Vivofit Jr. 3 (Marvel Black Panter edition) is on sale for just $49.99 at Amazon. That's 44% or $40 off its list price of $89.99 and its lowest price on record by a long shot.

The Garmin Vivofit Jr. 3 tracks steps, activities, sleep, and more in a swim-friendly, child-sized package. Better yet, its gamified design lets you child unlock app adventures, games, new watch faces, and more by completing daily activities and reaching their movement goals. And this is the Marvel edition, the Garmin Jr. app will let kids relive the Infinity Saga and be a hero alongside their favorite Marvel Avengers characters.

The parental control features are top-notch as well. You can easily track who your kids are talking to and block any unwanted contacts, schedule reminders for chores and other tasks, set timers for playtime and screen time, input emergency information, and much more. It even comes with a one-year battery life, so you won't need to constantly worry about plugging it in. Once the battery dies, it can simply be replaced.

Best for kids aged 4 to 7, the Vivofit Jr. 3 is a great companion for your little ones this summer. Keep them active, attentive, and engaged even when school lets out.