Olympus ED 18-180mm f3.5-6.3 is an Auto Focus (AF) SuperZoom lens with FourThirds max sensor coverage. When mounted on a FourThirds sensor camera, it will give you an FF equivalent focal range of 36 - 360mm. With a max aperture of f3.5 at 18mm, we can not consider this lens fast on wide end, and it is slow at the tele end with its max aperture of f6.3.
Olympus ED 18-180mm f3.5-6.3 is not a weather sealed lens, so you have to be extra careful against rain and dust.