The new Two-Piece Toilet with High Efficiency Flush with contemporary washlet s550e bidet seat is designed to conceal the washlet, power cord, and water supply hose for a seamless installation. The s550e washlet is the most advanced model and features 5 spray settings, auto open and close lid, heated seat, a nightlight, instantaneous water heating, and more. The washlet features Toto's Ewater+® system which uses electrolyzed water generated by a technologically advanced process that transforms 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 premise function further helps keep your toilet bowl clean by spraying the bowl before each use to prevent waste buildup. The Toto washlet s550e is operated by a luxury style illuminated touchpad remote with 2 user memory to save preferred settings. The new drake toilet features Toto's Dynamax tornado flush®, utilizing a 360° cleaning power to reach every part of the bowl. The Dynamax tornado flush system has a hole-free rim design with dual nozzles that creates a centrifugal washing action that assists in rinsing the bowl more efficiently. The enhanced design of the drake inner bowl reduces water flow resistance and turbulence, resulting in a quieter flush. The left-hand chrome trip lever allows you to proactively conserve water by choosing between a 0.8 GPF rinse or 1.6 GPF for tougher jobs. This version of the toto drake includes cefiontect, a layer of exceptionally smooth glaze that prevents particles from adhering to the ceramic. Cefiontect, Ewater+®, and tornado flush create a synergy that optimizes performance to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The hidden connection on washlet+ models provides a streamlined look and gives the impression of an integrated system. The drake comes ready for installation into a 12-inch rough-in and is compatible with t40 washlet+ electronic bidet seat and toilet bowl components only. Additional items needed for installation must be purchased separately: toilet water supply lines. Includes hardware, wax ring, toilet mounting bolts, and toilet bolt caps.