KOHLER K-6418-0 Cimarron Touchless Comfort Height 2-piece 1.28 GPF Elongated Toilet with AquaPiston Flushing Technology, White Flush is activated by a no-touch sensor mounted inside the tank. Touchless module projects an electromagnetic field through the top of the tank lid that senses your hand, causing the toilet to flush. Single-flush gravity uses the force of gravity and a precision-engineered tank, bowl, and trapway to create a strong siphon during flushing. Elongated bowl offers added room and comfort. Comfort Height feature offers chair-height seating that makes sitting down and standing up easier for most adults.