Samsung Galaxy Watch 9 review: Health data overload, but built for the future

Longer-lasting battery and upgraded processor. It's a functional, general-purpose smartwatch with intelligent touches. It's great for exercise and training, with accurate heart rate metrics in my testing. It takes a long time to charge. The accompanying band is not super comfortable. $379.99 at Amazon Follow ZDNET: Add us as a preferred source on Google. Consumers are catching on to the fact that not every generational upgrade to their favorite tech can be life-changing. Instead, companies are forced to improve their products little by little. I've thought about this a lot as I tested the Samsung Galaxy Watch 9. It arrives with a few improvements under the hood: a new processor, some additional health metrics, and a longer battery on the 40mm device. Also: Galaxy…