The M 400 provides highly efficient pool cleaning for pools up to 15m in length. Advanced systems ensure accurate scanning for systematic coverage of floor, walls and waterline, leaving clean and hygienic water. Step-up to a new pool cleaning experience. Get an outstanding full-pool clean, with total coverage regardless of pool shape, slope or obstacles. With the new MyDolphin™ Plus mobile app, the M 400 is always connected giving you the power to control your cleaner from anywhere, at any time.