Amazon Halo | $75 | Amazon
The Halo measures body fat percentage, your activity, sleep, and even your tone of voice to track things like “energy and positivity” according to the Halo’s product description.
Since it doesn’t have a screen, the Halo is a nice distraction-free way to keep track of fitness metrics. Finish that workout or get better sleep without a blinking screen to grab your attention! You can monitor everything on an app on your phone instead— on your schedule.