TigerShark2 is amongst advanced automatic portable pool cleaners. This cleaner has a preset 7-hour cleaning cycle. It calculates the size of the pool with on-board computers and programs itself for the most efficient cleaning pattern. It shuts off at the end of its cleaning cycle. Powerful on-board pumps suck up dirt and debris while they scour pool bottom, walls, inclines and steps. It features a patented easy-clean removal cartridge. Just remove the cartridge and rinse clean with a garden hose. Complete with 100' cord to clean pools up to 30' X 60'.