Sonic Alert Super Shaker 12V Bed Vibrator, Black

The Sonic Alert Super Shaker 12V Bed Vibrator (Black) is placed under a pillow or between a mattress and box springs. The powerful vibrations are guaranteed to wake up extremely heavy sleepers. A built-in temperature sensor protects the unit against overheating. The bed vibrator is designed to be plugged into the vibrator outlet on the back of the Sonic Boom alarm clock.