Delta® Toilet Seats with Night Light Technology provide a gentle, guiding light through the night. With the Night Light, there is no need to turn on the glaring bathroom light for nighttime tasks. An automatic timer starts when the batteries are loaded and runs 9 hours on and 15 hours off. The slow-closing toilet seat helps to prevent slamming and is equipped with No Slip seat bumpers for extra stability. For more info on our Night-Light toilet seat, visit: http://www.deltafaucet.com/inspiredliving/article/potty-training-toilet-seat-faq