Swivel-Cable Tangle Prevention System- As your Dolphin moves around the pool, the swivel ensures that the cable stays free and clear, allowing for complete pool coverage. Precision Navigation- CleverClean coverage is powered by an advanced navigation systems and scanning software. This ensures that every inch of your pool- walls, floor and waterline- are cleaned using the most efficient route. So smart, the system automatically navigated around obstacles and quickly returns to its route. Simplified Maintenance- Large capacity bag filtration ensures clog-free operation in any pool conditions.