Nikon 70-200mm f4G ED VR is an Auto Focus (AF) Telephoto Zoom lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 70 - 200mm. With a max aperture of f4 at 70mm, we can not consider this lens fast on wide end but f4 at 200mm is not too bad for tele end.
This lens features on optical image stabilization which helps capturing sharper images at lower shutter speeds. Nikon 70-200mm f4G ED VR is not a weather sealed lens, so you have to be extra careful against rain and dust.