There’s very little more that I desire from the modern smartwatch. Sure, I wouldn’t say no to additional sensors to track even more health factors. I could also take slicker software and smoother animations. I’d even smile at brighter, higher-resolution screens. But beyond all those incremental improvements, I still yearn for a sizeable leap in battery life. Thankfully, that doesn’t seem too far off.
We’ve already seen one of the most significant smartwatch launches of 2025: the OnePlus Watch 3. Beyond its bulky design and hit-and-miss heart rate accuracy, it’s hiding a technology I’m truly excited to see on smartwatches: silicon carbon batteries.