Living in fear of radiation? Finally you can carry around a portable radiation detector in a keychain friendly form factor. This little detector will detect radiation levels above 75 milliRoentgens per hour (mR/hr). It features a microprocessor that samples the air 32,768 times per second.
The portable radiation detector will alert you via its beep and flashing right LED. Could you ask for a better color for it to flash? The device features 24 hour detection (i.e. it never is off).
Paranoids rejoice. Available for $99.99 at Think Geek.
Keychain Radiation Detector