Sports Watches and GPS
Battery life against features, how accurate GPS really is under trees and between buildings, and how much watch any of it justifies.
Watches and Wearables gear guides
Sports watches, GPS accuracy, heart rate and the health metrics that are actually worth tracking. The one category here that cuts across every sport.
Health and Recovery Tracking
Heart rate, sleep scores, recovery numbers and blood oxygen. Which of it is measurement, which is estimate, and which you should ignore.