The Amazfit T-Rex 3 faces stiff competition in the ... and plenty of options for activity tracking. Polar’s Grit X Pro: claims to be a highly rugged device but only has a 7 day battery life ...

The Amazfit Cheetah Pro is a brilliant, affordable multisport watch with a bright AMOLED screen, a more-or-less reliable heart rate sensor, and dual-band GPS positioning. All for a very budget ...