Keychain Finder
Just whistle to find your keys
The Sonic Key Finder Key Chain ends hours of hopelessly searching for your keys. All you need to do is clap, whistle or shout. Any loud noise causes the Key Finder Key Chain to beep and the light to flash. Also handy for finding keyholes. Uses 2 small button batteries - includes 2 extra batteries.
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Keychain Finder
{"Manufacturer": "Keychain Finder", "Date First Available": "February 18, 2010"}