Grip-Tight installation hardware makes it easy to fasten the slow close toilet seat – everything is done from above the bowl ReadyLatch hinge provides a positive lock/unlock latch to securely hold seat in position, yet it easily removes for cleaning or adjusting fit Light intensity designed to provide enough light to see the KOHLER toilet seat without disrupting nighttime vision. Choose between three brightness levels: a soft glow or brighter illumination This KOHLER elongated toilet seat features dual LED lighting with a guiding light when the lid is down and a task light when lifted. Illumination cycle includes an automatic 10-hour nightlight This nightlight toilet seat is battery-operated—no electrical cords required. Up to 12 months of battery life (uses 4 AA batteries, not included)