FIND ONE FIND ALL LOCATORS Ideal for finding keys, purse, wallet and more. Set of 2 work together. One keychain design, and the other a slim credit card size design. Two batteries included. 30 foot range. Six color coded buttons help you locate the item you are looking for. Expandable - you can have up to 36 locators per household! Locators communicated with each other... no need for a main transmitter! Radio Shack model Number: 63-1220 UPC number: 040293004521