GoPro Hero9 Black weighs
158 g (0.35 lb / 5.57 oz) and has external dimensions of
71 x 55 x 34 mm (2.8 x 2.17 x 1.34″). Considering that the average weight of Action Camera type cameras is 118g, GoPro Hero9 Black is a significantly heavy camera for its class. With a thickness of 34mm, it is not small either, 10mm thicker than the average of its class.
Weight Comparison
Action Camera Cameras
Thickness Comparison
Action Camera Cameras
Here is the front and top view image of GoPro Hero9 Black with the dimensions:
In order to give you a better idea about the real life size of GoPro Hero9 Black, we have added an image of how it looks next to a credit card and an AA type battery.
Now let's compare GoPro Hero9 Black size with the camera that it replaced: GoPro Hero8 Black (Check Hero9 Black vs Hero8 Black). GoPro Hero8 Black is clearly the smaller of the two cameras. Its body is 5mm narrower, 6mm shorter and 6mm thinner than GoPro Hero9 Black.
Below you can find the comparison of the weight and thickness of GoPro Hero9 Black with its main competitors:
GoPro Hero9 Black Size Compared to Main Competitors
Weather Sealing
GoPro Hero9 Black has environmental sealings on its body which makes it a weather resistant camera, providing resistance against the water and dust getting in to the camera. If you like outdoors photography and want to be able to use your camera in extreme conditions, GoPro Hero9 Black will serve you well.