Getting up can be a difficult task. First you can't hear the alarm going off, then you snooze, and then you snooze some more. Eventually, you haven't woken up at all but fallen back into blissful sleep. The Sonic Boom alarm clock doesn't let you do that. The noise level can be set so high - 113 decibels - that it's basically impossible to feel sleepy after hearing it (a lawn mower's volume is around 90 dB and a chainsaw reaches a measly 110 dB). For added sleep resistant devices, it comes with a shaker to put under your mattress for maximum discomfort.

Added from www.thinkgeek.com