Featuring an exclusive 4-wheel drive capability, the Hayward AquaNaut 400 Suction Cleaner offers superior power, traction and stability for end-to-end cleaning in pools of all kinds. its patented V-Flex™ technology with self-adjusting variable vanes maximize suction power while virtually eliminating clogs. AquaNaut 400 expertly navigates any surface while maintaining optimal suction, even when encountering tough obstacles and large debris—and its patented rugged tire treads provide superior climbing power and maneuverability on surfaces like concrete, gunite, vinyl, fiberglass, tile and pebble. An advanced design optimizes AquaNaut's flow performance, making it the perfect partner for variable-speed pumps. Ideal for larger in-ground pools up to 20 x 40 ft. and pools with deep ends, AquaNaut 400 provides a powerful corner-to-corner clean without clogging or getting stuck