A watch, activity tracker and fitness device rolled into one, the Fitbit Surge packs a lot of technology onto your wrist. It has an always-on display for telling the time, automatic sleep detection, an optical heart rate monitor and its own GPS.
The 1.26-inch grayscale screen can be set to display incoming messages from your smartphone. It can track running and walking, but it also estimates calories burned for activities such as hiking, weight lifting and yoga. You can also read text messages and see incoming calls.
Coolest feature: Its built-in GPS means you can go running without toting your smartphone. The watch will record the distance and total time of your workout, and download it to the map built into the Fitbit app.
Best for: Runners who want fitness tracking but the basic functions of a smartwatch.
John R. Quain has covered technology for more than 20 years, reporting on consumer electronics, cars and the future of communications.