The Sonic Boom while not as loud as advertised made up for that shortcoming by the use of the "shaker". I doubt if anyone can sleep through that shaking. I wish I could say the same about the alarm.

I purchased the Sonic Boom alarm to wake my teenage son who can usually sleep through any other alarm. This usually wakes him up, but then he turns off the alarm and goes back to sleep. I'm thinking of moving it to where he can't reach it from the bed.

Purchased this item for my twenty-year-old son, the impossibly sound sleeper who couldn't be trusted to wake himself up for tech school/work each morning. I chose this clock after reading some really great reviews, and I agree that this thing really works! My son is ecstatic that he is finally able to get up on his own, and is no longer late for any morning events! Highly recommend!

Great alarm clock, the vibration really helps you wake up, my only complaint is there is no mon-fri mode so i have to remember to shut it off on the weekends.

Got this for my son. He says it totally annoying. So, mission accomplished!