Fitbit Charge 4 updated with features like skin temperature, SpO2 tracker, and more

The new features will now also be available to all its Versa 2, Inspire 2 and Charge 4 users in India.

from http://www.firstpost.com/tech/news-analysis/fitbit-charge-4-updated-with-features-like-skin-temperature-spo2-tracker-and-more-9297101.html