Apple Watch Ultra 4 vs Series 12 for Swimming and Diving: 100 m, 40 m Depth and What 50 m Covers

Both new Apple Watches swim. Apple rates Series 12 at 50 meters with a depth gauge that stops at 6 meters, and Ultra 4 at 100 meters with recreational scuba certification to 40 meters, and that single difference is what separates a $399 watch from a $799 one in the water. The Ocean Band in translucent kelp, one of three new colors in a new...