During our Versa 4 tests, we decided to forgo the GPS connection before a few runs and found that the tracking accuracy was off by as much as 1/8th of a mile. Waiting for the Versa 4 to connect can be a frustrating experience, yet it's imperative to do so to ensure accurate tracking. We find the Sense 2 connects to a GPS signal far quicker than the Versa 4, which can have a major impact on fitness tracking. And although the Versa 4 seems designed to be more of a legit fitness tracker, it's actually the Sense 2 that proves to be the more reliable everyday wearable. The biggest difference between the Versa 4 and the Sense 2 comes down to their individual health and fitness tracking performance. The Versa 4 is available in Graphite, Platinum, and Copper Rose, while the Sense 2 comes in Shadow Grey, Lunar White, and Soft Gold.

Though perhaps the biggest difference between the two comes down to the available colors. Although this is technically a difference in size, it's so minimal that it's hard to notice which watch is which when they're sitting next to each other. While the Versa 4 measures 40.4mm, the Sense 2's case size is 40.5mm. One area where they do differ, however, is with their case size. They both also have a small side button that can be used in conjunction with the watch's touchscreen controls. Other similarities include a water-resistance rating of 50 meters and the ability to use the same interchangeable watch bands. Each has the same square watch face with subtle, rounded edges, as well as a display size of 336 x 336 pixels. Both the Sense 2 and the Versa 4 are near-identical clones of one another and feature a similar design to the generations that came before.

Fitbit versa 2 vs versa 4