Dolphin Liberty 400 with its innovative cordless design and inductive charging for unprecedented agility and convenience: the efficiency of Dolphin technology as always - now totally wireless. Lithium-ion battery with 5,000 mAh capacity and 6-hour inductive charging (shaded area) via a magnetic plug for easy charging. Lightweight and compact, it is ideal for all types of pools up to 10 metres in length, both in-ground and removable (with rigid walls). Bottom and wall cleaning, in a 2.5 hour cleaning cycle. The cycle selector allows you to customise the cleaning and choose between cleaning only the bottom or the bottom and walls of the pool. ECO Mode keeps your pool clean all week with short 30-minute cleaning cycles. Click-Up system for easy collection. With a sound sensor, the Liberty 300 will come up to you for easy pool removal. Ergonomic design. Weighing only 8.1 kg, it is easy to handle and easy to empty when removed from the water. Easy-Clean filtration basket with thin, ultra-thin, interchangeable panels for convenient top access. Tracked traction for perfect adhesion on all types of coatings. Active front brush that rotates at twice the speed of the robot, for optimal cleaning of encrusted dirt. CleverClean coverage. Advanced scanning software and navigation system ensures perfect pool coverage, using the most efficient route to optimise the cleaning cycle. MyDolphinTM Plus mobile app: for setting customised cleaning programmes. Also compatible with salt chlorination pools.