The purpose of the looking at the future...is to disturb the present!

Gaston Berger (1896-1960), francuski futurolog

OnePlus Watch 3: The Battery King of Smartwatches

The OnePlus Watch 3 raises the bar, putting Apple, Google, and Samsung to shame with its five-day battery.
Link :
https://www.wired.com/review/oneplus-watch-3/