Fitbit has unveiled the third device in the Fitbit Charge family, the Fitbit Charge 3, and the new version adds SpO2 tracking among other health tracking improvements. The device will be available ...

Fitbit makes a variety of fitness trackers and, more recently, smartwatches – but its two most successful devices are the Charge and Versa. The Charge trackers are Fitbit’s best-selling devices, and ...