Because sometimes you want a notification that’s spring-powered.

Watches can do plenty more than simply tell the time — some display calendar information, while others record elapsed minutes or show the phases of the moon. One particularly quirky (though useful) complication even features a built-in mechanical alarm.

Such mechanical alarm watches were once relatively plentiful. (Hell, the watch historically gifted to presidents of the United States is a mechanical alarm watch, the Vulcain Cricket.)
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