As a bonus, if you read the user manual with these, they come with a warning not to have the clock within 3 feet of your head while sleeping, due to radiation exposure or something.

Probably just a legal thing to be sure they cant be sued in extreme situations. like someone making a bed of clocks, and spending decades sleeping on them until they develop cancer...

Unless you drop them, or get them wet, new alarm clocks may not be as burly, but they're much lighter and easier to move around. They also have many more features now, like being able to sync with your phone for reminders and such.