Some examples of a cool alarm clocks are: Silent alarm clock, Wifi Donation Alarm Clock, Bacon Alarm Clock, Flying Alarm Clock, Light Sleeper Alarm Clock, Banclock, Danger Bomb Alarm Clock, to name a few.

alarm clock = (der) Wecker

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A clock radio and an alarm clock are two very similar things which provide some of the same functions however they differ in their features. An alarm clock is a basic clock which has an alarm function and a clock radio combines the use of an AM/FM radio and an alarm clock.