It will get the job done.
I bought this alarm clock for my 13 year old son who could literally sleep through a tornado. The only thing that reliably wakes him is me yelling that he's about to miss the bus. We have tried every combination of alarms to get him up and he just doesn't hear them, or turns them off in his sleep, etc etc.
Pros:
Loud, very loud. It will wake the entire house.
The vibration feedback device rumbles enough to feel it in our hardwood floors.
Small, lightweight
Cons:
The directions are not very clear and clearly translated to English.
The time and alarm settings move forward 1 minute at a time. Can't change hour independently so if you miss it you have to run through all 23 hours and 59 minutes again.
Buttons are very small and easy to fat finger.
Overall, it gets the job done where others fail. The key is setting up the vibration unit and setting BOTH alarms. Seems that the combination of alarm and vibration feed back coupled with a secondary alarm after do the trick.
Buy with confidence but have someone with small hands and no temper set it up.
Verified purchase: YesCondition: New