Yes, a second operating system will kick in when you’re ready to give up some most features in order to squeeze as much as 12 days of endurance on a single charge. Even without that neat trick, the OnePlus Watch 2 is an undeniable battery life champ, being capable of keeping the lights on for about 100 hours sans making functionality compromises.
Make no mistake, this is a very functional and feature-packed timepiece, with a glorious circular AMOLED display in tow and almost everything you could ever need from a health monitoring and fitness tracking perspective. While ECG technology is absent, the presence of a blood oxygen sensor, in-depth sleep tracking, heart rate monitoring, stress detection, and all kinds of activity metrics make this value equation incredibly hard to beat by the end of the holiday season.