Polar’s new Grit X outdoor watch can track the ups and downs of your workouts
Polar’s new Grit X outdoor watch can track the ups and downs of your workouts
Apr 22, 2020, 2:19pm UTC
https://www.theverge.com/2020/4/22/21229632/polar-grit-x-outdoor-watch-hike-multisport-wearable-fitness