Check the listing for details. Dolphin Explorer E20 Robotic Pool Cleaner. Color: Black, Condition: New. Listed at 450.00 USD. The Dolphin Explorer E20 Robotic Pool Cleaner is a high-tech cleaning tool designed for in-ground pools. With a sleek black color and a sturdy construction, this robotic pool cleaner by Dolphin offers 2 hours of autonomy and a 50-foot cable length for easy maneuverability. Manufactured by Maytronics, the Dolphin Explorer E20 is lightweight (13.8 lbs) and suitable for both pool walls and pool floors, making it an efficient and convenient choice for maintaining a clean pool.The Dolphin Explorer E20 Robotic Pool Cleaner is a high-tech cleaning tool designed for in-ground pools. With a sleek black color and a sturdy construction, this robotic pool cleaner by Dolphin offers 2 hours of autonomy and a 50-foot cable length for easy maneuverability. Manufactured by Maytronics, the Dolphin Explorer E20 is lightweight (13.8 lbs) and suitable for both pool walls and pool floors, making it an efficient and convenient choice for maintaining a clean pool.