Alarm clocks (Microsoft)

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A clear sign that the alarm clock is on its way out is that manufacturers are turning to increasingly desperate ways to make theirs stand out; from flying clocks that must be captured before they can be switched off to dumbbell-shaped ones that require a certain amount of exercise before they fall silent.

But the simple fact is, every cellphone you can buy has an alarm clock built in. Since our mobiles never leave our sides, time is ticking for the humble alarm clock.

Life expectancy: seven years
Survived by: multifunctional cellphones