December 18, 2015 9:23 AM EST

The wearable technology market is set to grow by nearly 50% in 2016, according to research firm IDC. Among the most popular wearable devices: fitness trackers. Made by companies like Fitbit and Jawbone, fitness trackers monitor metrics like your heartbeat, number of steps taken and sleep quality.

For more about fitness trackers and what they can do, watch the video above.

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