How to adjust the distance of Blue Devils T60 camera?

The way to adjust the distance of T60 camera of Blue Demon Ji is.

Open the camera's video window and slowly twist the lens ring left and right, and the scene in the video window will gradually become clear from blur.

No matter whether the scene in the video window is far or near, when you twist the lens ring, it will change from fuzzy-clear-fuzzy to a certain point. When the scene you need is in the clearest state, the adjustment is completed.