This is the battery operated Pool Blaster Max Li vacuum that has a high capacity filter. The Pool Master Max also has a unique wall mounting feature that allows for grab-and-go convenience. This cleaner holds more dirt and debris and tackles the largest of messes with ease. Featuring a high flow pump and industry leading suction, the MAX provides extra power for deep cleaning.Maintenance of the Pool Blaster MAX is a breeze with its easy empty bag that keeps your hands clean. Plus the Max can be attached to most standard pool poles for extended reach, cleaning large areas with its removable 10.5 inch vacuum head or spot cleaning when the vacuum head is detached.As the flagship product of the Pool Blaster Line, the Pool Blaster Max shattered the mold of traditional pool cleaners. Initially introduced as the Pool Buster Max, the unit has been redefining the world of pool maintenance since 2001 and has acted as a springboard for the design of the rest of Water Tech's battery powered Pool Blaster Line. Every detail of the Pool Blaster Max has been carefully thought out to maximize efficiency and convenience.Named Pool and Spa News Reader's Choice Best New Product Award, the Pool Blaster Max is the perfect tool for residential pools, spas, and hot tubs. It's the perfect tool for you!