The Toto® T40 WASHLET®+ and Auto Flush Ready S550e Elongated Bidet Toilet Seat with EWATER+® and Auto Open and Close Contemporary Lid is an electronic luxury seat that cleanses you with warm water, providing an exceptionally clean feeling. Instead of traditional toilet paper that can sometimes be rough and often ineffective, the WASHLET® quickly provides comfortable warm water cleansing at the touch of a button. The Toto® T40 WASHLET®+ Ready WASHLET® S550e is designed to conceal the WASHLET® bidet seat's power cord and water supply hose for a seamless installation. The WASHLET® features Toto®s technologically advanced EWATER+ system which uses electrolyzed water generated by a technologically advanced process, transforming the water into a safe and powerful compound. By misting the bowl after every use, the EWATER+ technology helps to keep your toilet bowl clean and hygienic without any extra harsh chemicals. The PREMIST function sprays the bowl with water before each use, preventing waste buildup. Separately sold Auto Flush kit provides a hands-free automatic flush after every use. No need to touch buttons or handles and never worry about someone forgetting to flush. The Toto® WASHLET® S550e is operated by a luxury style illuminated touch pad remote with 2 user memory to save preferred settings. The WASHLET® features 5 spray settings, auto open and close lid, heated seat, a night light and instantaneous water heating. The newly redesigned lid style resides flush with the toilet bowl, providing a streamline look and giving the impression of an integrated system. The WASHLET® reduces the need for toilet paper, saving trees and water used to manufacture each roll. Medical conditions, age and debilitating illnesses can make using the bathroom without assistance almost impossible; but with a WASHLET®, just the touch of a button can leave you feeling clean. Includes mounting and connection hardware. WASHLET®+ ready WASHLET® models are designed to work with Toto® T40 WASHLET®+ ready toilets only. If you are looking for a WASHLET® bidet seat to fit your existing toilet installation, please look for WASHLET® models that do not contain WASHLET®+ in the description.