How resistant the watch is to submersion in water, as tested by subjecting the device to a water pressure equivalent to the depth the manufacturer claims the fitness tracker can withstand.

Google owned Fitbit is discounting the Charge 4 series of fitness trackers today on Amazon, letting you save up to 33% off the base version, and 29% off the Special Edition variant. Launched just ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. We've been testing the best Fitbits for over a decade. In that time, they've gone from ...