Hayward RC9955 TigerShark Plus 110-Volt/24-VDC Remote Control Pool Cleaner The only Robotic with 2 fine porosity reinforced filtering cartridges versus our competitor's debris bag. Wireless hand held remote control gets you to the dirt on command Calculates the size of your pool and programs itself into the most time and energy efficient pattern for a spotless pool. Clean up is easy. No messy bags to deal with Perfect for pools up to 20 ft x 40 ft