Olympus ED 14-150mm F4-5.6 II 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 28 - 300mm. With a max aperture of f4 at 14mm, we can not consider this lens fast on wide end and neither at tele end with its f5.6.
Olympus ED 14-150mm F4-5.6 II is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body. Olympus replaced the older Olympus M.Zuiko Digital ED 14-150mm f4-5.6 with this model. Follow the link to read our detailed comparison of these model: Compare Olympus M.Zuiko Digital ED 14-150mm F4-5.6 II vs Olympus M.Zuiko Digital ED 14-150mm f4-5.6