Aqua Products AJMXUL JetMax Ultra Automatic Pool Cleaner is a light weight and reliable automatic vacuum with the fewest moving parts. Features a patented valve system and internal pump motor which propels the JetMAX and vacuums your pool. Units require less maintenance due to the elimination of the drive motor. An internal impeller forces pressurized water through Hydroscrub nozzles to power-wash dirt from the pool surface into the internal filter bag.