If battery life is important to you, the DJI Osmo Action 5 Pro should be at the top of your list. The Pro uses a larger 1,950mAh battery and features a more efficient 4nm image processor ...
The tiny DJI Osmo Action 4 is just 2.8 x 1.7 x 1.3 inches in size, yet it shoots 4K-quality digital video at 120 frames per seconds with unparalleled performance in low-light situations.