I recently received the Shark U;tracyclone portable vacum cleaner, Model CH950. The product is lightweight and come with a brush and crevice tool for easy and auick cleanups.The Sark comes with a NICad battery which takes about four to six hours to charge. Depending on how you use the device the run time varies from twelve to fifteen minutes. Personally I would prefer a unit with longer run time than the current model. The vacum does an excellent job in removing dog from various suraces.