The SENSSE Perfect Smile LED Lip & Teeth Duo is a 2-in-1 LED light therapy device that helps whiten teeth, support gum health and smooth fine lines around your lips. You can choose from three modes. Duo treats lips and teeth together, Teeth brightens, heals and reduces sensitivity, and Lip to stimulates collagen, helping to plump and smooth. It uses four light wavelengths - blue helps whiten teeth, red and deep red support gum health, and near-infrared targets lip tissue.96-LED chipset - high-irradiance light reaches deeper tissue layers for better resultsAuto shut-off with a five-minute timerRechargeable and portableIncludes storage bag and USB charging cable