It seems that we struck a nerve with our post the other day on the "Sonic Bomb" eardrum-shattering alarm clock, perhaps a testament to today's multitasked but sleep-deprived society. As a reader service, therefore, we thought we should add the Engio's "Vibrating Alarm Watch" to the list of anti-sleep aids.
It's actually intended for hearing-impaired people, vibrating and blinking when a public alarm is sounded. The watch's mechanisms are triggered by microphones built into its strap that can be programmed to detect specific frequencies. This could be useful even for some whose hearing isn't impaired--such as those who seem to have iPod earbuds permanently implanted in their aural canals. (You know who you are.)