I am always surprised that most American alarm clocks run in mains power. In the 3rd world alarm clocks run on battery power, that saves a lot of complexity of

I am always surprised that most American alarm clocks run in mains power. In the 3rd world alarm clocks run on battery power, that saves a lot of complexity of having to deal with preserving the time in case of power disruptions, and they are fully functional even through power disruptions.