Powered by a built-in Battery, sleek designed Robotic Pool Cleaners can scrub pool surfaces of any shape with the push of a button. The cordless design ensures nimble movement and also gets rid of the risk of accidental electrocution from a corded. Robotic Pool Vacuum goes about its business automatically, and efficiently, strong suction enough to easily pick up dust, sand, small sort leaves, etc., and then filter. The robotic pool cleaners weighed only 5.9 lbs, so we could comfortably move the pool vacuum with one hand, and easy to take out of the pool.