This is the new $500 Insta360 X4. It is capable of 360 video at 8k, 30fps, 5.7k, 60fps, and 4k, 100fps. It can take 72MP 360 degree photos. It is waterproof down 10 meters. It has great stabilization, a battery rated for 75 minutes of 8k footage, and it has a much improved removable lens guard system. But unlike previous X series cameras there are no fancy software tricks or large hardware overhauls in the X4. Which begs the question: has the X series hit its peak?