To get the most out of your activity tracker, you need to wear it regularly. Fortunately, most devices use lower-powered displays than smartwatches, so you’ll get about a week of battery life instead of a few days.

Battery life: one year

This device has a replaceable coin cell battery that’s rated for a full year+ of use, so you don’t have to worry about charging it up on a weekly (or even monthly) basis. The Vivofit is far from Garmin’s most advanced activity tracker, but it does have some solid features, especially for more casual exercisers.

In addition to tracking and displaying your steps, distance, and intensity minutes on its backlit display, the wrist-worn Vivofit 4 monitors your sleep and automatically recognizes the type of exercise you do. You can also get reminders to move and track your activity progress with the MoveIQ feature. What’s more, it’s safe to wear while swimming and showering. Garmin isn’t exactly known for its cutting-edge designs, so style-conscious folks will be happy to know that the Vivofit 4 is compatible with a variety of bands, including options from Jonathan Adler and Gabrielle and Alexandra.