These are the best sleep gadgets, according to Digital Trends.

According to a recent study by the National Sleep Foundation, 45 percent of Americans are affected by poor or insufficient sleep. Needless to say, most of us could benefit from more quality winks.

These days, more people are paying attention to the potential benefits of smart sleep technology. BCC Research analyst Natana Raj told NBCnews.com that Americans shelled out more than $43 billion on sleep aids and sleep tech in 2016, and that number is on the rise.

The majority of these products are designed to provide actionable feedback on the duration and/or quality of your slumber. And while you may not need a bracelet to tell you that you’re tired, smart sleep technology can let you know just how much sleep you’re losing out on.