It does have a fast diopter focus. Mine is not new, so perhaps they have changed.
My old Simmons has fast focus just like that. I will have to take a close look at it for a model number. I suspect it is pretty old, but very clear and works great.
I have one. Was on a .22-250 for a long time and superseded by a Nightforce but it never missed a beat. Held zero, surprisingly good under the lamp. Struggled at last light but was a decent option. Would be on my .22 if the rear sight did foul the front bell
The original scope made in the 1980's came with coin slot turret adjusters and the glass was fantastic. The Chinese copies about now have thumb and finger adjusters and the glass is crap.