Amazfit GTR 4

Ready for action, the GTR 4 features a battery with a nominal capacity of 475 mAh. The watch's new power-saving mode even allows for the continued use of functions such as sports modes, health metric measurements, and more, all while conserving energy. Enjoy highly accurate 24-hour monitoring of heart rate, blood oxygen saturation, and stress levels. The watch can also detect your breathing rate and is capable of quickly measuring these four important health metrics with a simple tap. The GTR 4 can automatically recognize movements and count the repetitions of dozens of strength training exercises, many of which have customizable variations in the Zepp app, as well as track your rest times between sets.