It can record 5K resolution videos with HyperSmooth 3.0 stabilisation! It features a front-facing colour LCD for the first timeIt has a larger battery than the Hero 8 Black this are some highlight of Gopro Hero 9

One word to say for go pro hero 9 - BEAST
A must buy for all who love Vlogging & doing adventure.
Very copact, easy to carry, build like a TANK
Worth investing 50k. The quality of the videos, time warp, time lapse is mind blowing.
Battery is bigger, screen is bigger, 5K, HYPERBOOST,...