Misplacing your keys can be annoying, frustrating and time consuming. With Key Finders, you'll never worry or wonder where you left or forgot your keys again because it'll always lead you right to them. Find your keys in 3 simple steps Attach the keyfinder receiver to your keychain Place the remote control card unit inside your wallet Double click the button on the remote control and follow the sound to your keys - its as simple as that! Unlike any other Key Finders in the market, the remote control unit is in the shape of a credit card which you can store in your wallet. This Ultimate Key Finder has an added professional appeal to its look, comes with a sleek looking black metal case with an additional built in push button LED torch. Works great as a corporate gift! Range: 80 feet (25 meters). Will locate keys in drawers, pockets, under pillows and other concealed locations. Features: - The keychain receiver unit requires 2 x CR2032 batteries (included). - The credit card sized transmitter unit requires 2 x CR2016 batteries (included). Measurements: - The keychain receiver unit is approximately 6 x 3.4 x 1.2 cm in size - The credit card sized transmitter is approximately 8.4 x 5.5 x 0.3 cm in size.