Watch out, Whoop: Polar joins the fitness band race with a premium option
Image: Polar Polar launched its first heart rate monitor more than 30 years ago, setting the standard that all others have been measured against. Now, the company is bringing this technology to its line of sports watches with the Polar Loop: a health and fitness tracker with no display like the Whoop band and Amazfit Helio Strap. Without a display, the Loop instead relies on a robust smartphone platform called Polar Flow, which integrates with other Polar watches as well. Also: The best sport