This Fitness Tracker Has Over 2,000 Rave Reviews on Amazon, and It's $21 Today Only

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Whether you're on the hunt for a new fitness tracker for yourself or looking to treat someone in your life this holiday season, we've got good news for you. We found this popular Letsfit Fitness Tracker HR ($21, originally $28) trending in Amazon's big Cyber Monday sale, and it has over 2,000 rave reviews.

The bestselling device features a heart tracker that monitors you 24/7. It can even help you track your sleep. The watch counts your steps, distance, calories, and activity on up to 14 different exercises. You can even receive calls, texts, calendar, and app notifications, so you never miss a beat. Need more convincing? It's easy to charge with a built-in USB plug.

If you're sold, hurry and snag one for everyone on your list before it sells out. It comes in tons of colors, too. Keep reading to shop them all.