Olympus ED 14-42mm F3.5-5.6 EZ is an Auto Focus (AF) Standard Zoom lens with FourThirds max sensor coverage. When mounted on a FourThirds sensor camera, it will give you an FF equivalent focal range of 28 - 84mm. With a max aperture of f3.5 at 14mm, we can not consider this lens fast on wide end and neither at tele end with its f5.6.
Olympus ED 14-42mm F3.5-5.6 EZ is not a weather sealed lens, so you have to be extra careful against rain and dust.