How to Install New WatchOS 10 on Your Apple Watch

To install WatchOS 10 on your Apple Watch, it will need to be charged to at least 50% of its maximum battery capacity and plugged into its charger. You’ll also need to be within range of your iPhone, which should also be connected to a working Wi-Fi network.

Apple Watch Series 9 and Ultra 2 review: small but smart improvements

Some years, there are updates that completely upend an entire category. Others, you get something like the $399-plus Apple Watch Series 9 and the $799 Ultra 2 — steady improvements that technically add up to the best Apple Watches we’ve ever seen. Just not by a whole lot. And not if you’ve already got a recent Apple Watch model.