You get roughly a minute and a half before you start losing some of your hearing, but at 113 decibels, if you don’t wake up before a minute and a half, you must be deaf already or dead. You can set the volume, but it maxes out at 113 decibels.
There is also a thing to vibrate the bed, I would assume you’d place the item beneath the mattress. Hopefully, for your neighbors sake, you can use that combination and wake up with a lower volume setting than 113 decibels.
So, if you have a hard time waking up, this thing should have you covered. It will cost you about $54.
Wake up to a Heart Attack with the Sonic Bomb Alarm Clock [via uberreview]