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90 Minutes / Sleep timer

90 Minutes
90 Minutes

With the accelerated pace of life,lack of sleep is a common problem,especially for a large number of white-collar women.Researchers show that,every 90 minutes sleep,for adults,is a sleep cycle,and they will get full of energy when their sleep time is the integer multiple of 90 minutes.
Different from the previous alarm clock,this sleep timer regards 90 minutes for the sector,and in this way it could urge you to have a sweet sleep.
Using strategy: Turning the knob to the desired time scale,and you will have a peaceful sleep until the soft light appearing,along with a dulcet tone.


Nanjing Agricultural University

Nanjing Agricultural University
Nanjing, China

Yun Shi,
Nanjing Agricultural University