Assuming you are talking about the Shark Navigator vacuum, it has a suction power of around 1200 watts. This is not the strongest suction power out there, but it is still pretty good and should be able to handle most cleaning jobs. The vacuum also has a dustbin capacity of 0.8 quarts, which is again, not the largest capacity but should be enough for most homes. Overall, the Shark Navigator is a good vacuum cleaner with decent suction power and capacity.