Robot vacuum with a 744 GPH flow rate automatically cleans the bottom of pools; Works best with 31-foot 4-inch rectangular, and 24-foot round pools Built-in debris bag holds 1 gallon of dirt, leaves, and sand before needing to be emptied for more clean time Water sensors activate the device when fully submerged in water and deactivates when out of the water for motor protection Patented directional jet system provides efficient cleaning and will change direction when encountering walls or obstacles Cordless vacuum operates for 90 minutes when fully charged; Includes a charging cord, LED nighttime light, and retrieval kit