I reviewed the Amazfit GTS (read review here) in November 2019 and the Apple Watch lookalike was indeed promising health and fitness smart wearable of its time, despite it being subjected to a few software glitches that marred the user experience. Then came the Amazfit GTS 2, which brought wholesome upgrades, including the blood-oxygen saturation (SpO2) monitor and BioTracker 2 PPG optical sensor for heart rate, stress levels, and PAI score. The successor to the GTS, the second-gen health and fitness tracker had everything in place, except accuracy.
Cut to 2021, Amazfit has added two new models