TOUCHLESS ACTIVATION: Touch-free activation helps keep your faucet mess-free, cutting down on cleaning. Turn on and off simply by placing your hand within 4 inches of the faucet. Automatic water flow shut-off after four minutes helps conserve water TOUCH IT ON. TOUCH IT OFF. Touch anywhere on the faucet spout or handle with your wrist or forearm to start and stop the flow of water or use the single-handle manually. The TempSense LED indicator light changes color with water temperature LASTS 2X LONGER: Patented DIAMOND Seal Technology reduces leak points and lasts 2X longer than the industry standard - ensuring leak-free operation of the bathroom faucet CORROSION-RESISTANT FINISH: Our finishes are intentionally engineered for durability and tested for corrosion resistance to at least 2 times industry standards SINGLE HOLE BATHROOM FAUCET: Fits 1 or 3-hole 4 in. installations with included deck plate EASY-TO-CLEAN DRAIN: Push pop-up drain unscrews from above the deck for quick removal and easy cleaning of hair and other bathroom sink debris You can install with confidence, knowing Delta bathroom faucets are backed by Delta Faucet's Lifetime Limited Warranty