The Wireless Key Finder will save you valuable time in the morning! Never lose your keys again. Attach one of the key finder key chains to your prized set of keys and never lose track of them again. Next time you misplace your keys, simply press the appropriate color on the compact color pager and the matching color key chain will beep. 2 color coded key chains are included, and they have a 50 foot operating range. The morning rush will be a breeze, thanks to these locators! 2 'AAA' batteries required, but not included.