Alarm for Heavy Sleeper

[RCOR]

Hi everyone

Can anyone recommend an alarm clock for my VERY heavy sleeping son. But one that won't wake everyone else. I've looked online and can see ones with vibrating pod, but do they work? The pods look so small I imagine if he wasn't directly over it he'd still not waken.

What a blessing to be such a good sleeper. But at 19, he shouldn't need his Mammy to wake him😆. Many thanks

My dd uses a vibrating bracelet thing at uni because she sleeps with earplugs in. She says that they are very good. It’s rubber and fits on the wrist like a watch strap.