That means there's a natural price disparity between the pair. “It’s truly increased my awareness of how stress is impacting my body and encourages me to meditate before I go to bed so I can calm my mind and get a good, restful sleep,” Perez says. The Versa 3 is now over two years old, launching in 2020, whereas the Versa 4 was only released in September.

After wearing her Sense 2, which is 10% thinner and 15% lighter than its predecessor, for the last two months, Perez has noticed she gets most body response notifications at night.

(Note: you can turn these notifications off if they get annoying.) It also provides action items you can do in times of a stress response, like taking a walk, meditating, and mood logging. The biggest difference between the two watches is that the Versa 3 has its own on-board GPS, while the. When it detects a response, such as an increase in temperature or heart rate, it alerts you and asks you to reflect on how you’re feeling. Sense 2’s cEDA algorithm passively tracks metrics like skin temperature and heart rate throughout the day. While the differences in the design between the Fitbit Sense 2 and the Versa 4 arent necessarily immediately obvious, there are some hardware differences between these two models. “With Sense 2, we’re also introducing a new body response sensor that measures continuous electrodermal activity, also known as cEDA,” Elena Perez, Google Group Product Manager, tells SELF.

Versa 3 vs versa 4