The Evergreen Elf monitors water levels in Christmas tree stands throughout the season. His fun, talking alert, Evergreen Elf here, out of water and light-up belly will let you know when water levels are low. This hardworking Elf is on a mission to protect every family and Christmas tree for the Holiday season. No more climbing over presents or under branches to check the Christmas tree. His easy-to-use adjustable sensor works with all commercial tree stands on the market. Just place the Evergreen Elf in the tree stand, adjust the sensor and let him tell you when to water. A well-watered tree will reduce needle drop and risk of fire. Every year, millions of dollars in damages are directly related to Christmas tree fires, causing tragedy during a time of joy. This fire risk can be reduced by ensuring that the tree is never thirsty. Designed to run continuously for the Holiday season, the Evergreen Elf will alert when the batteries are low should your season extend into well into January. The interchangeable batteries allow Evergreen Elf to be used year after year.