Ecosaver's shower handle with LED timer helps you save time and money. The shower handle glows green for up to 4 minutes, then it glows blue for up to 8 minutes, and then red for up to 12 minutes of showering. After 12 minutes of showering, the handle flashes red, which reminds you that it is time to get out of the shower. Easy installation in a couple of minutes on all common shower hoses with standard half inch thread, no tools required. Unscrew your existing shower handle and screw in Ecosaver's Shower handle with LED timer. Ecosaver's Shower handle with LED timer provides a nice shower jet with an abundant amount of water.