With advanced features such as voice assistants, crash detection, call and text support, and long battery lives, modern smartwatches are far more than just an accessory. And thanks to powerful sensors and extensive app suites, they’ve become one of the most popular health and fitness trackers, too. At ZDNET, we’ve tested all of the best smartwatches on the market, testing their battery life, durability, features, and more. We also interviewed athletes, fitness experts, and medical professionals to ask what features they loved most about their smartwatches to help you get a better idea of the top health and fitness tracking features, too.Also: The best Garmin watches: Expert tested What is the best smartwatch right now? Based on our extensive hands-on testing and insights from experts, the Apple Watch Ultra 2 More