Frequently Asked Questions

What Wake-up Light sunrise duration is best for me?

This may take some trial and error as your ideal setting depends on your Wake-up Light brightness and latitude at which you live. Here is some information to help:

Factory-set at 30 minutes

Your Daybreak is factory-set for a 30 minute sunrise, but you can change the duration in 15-minute increments from 15 to 120 minutes.

Take your time

Ideally, you want to awaken about 5 to 15 minutes before you have to get out of bed. You should linger in bed for a while, as if you were on vacation or enjoying a weekend. We all know how disturbing it is to wake up by a blaring alarm that forces you to jump out of bed. This step is important in helping your body transition from sleep to wake time.


The closer you are to the poles, the more your body will be accustomed to a longer sunrise. For example, at the equator, a natural sunrise is over after about fifteen minutes, but an Alaskan/Canadian sunrise can last up to two hours. Try to match what your body is already accustomed to.

A longer sunrise is generally more effective at resetting your circadian rhythm and starting your
wake cycles.

Waking up too early?

If you find yourself awakening too early, use a lamp that is less bright, shorten your sunrise duration, and/or set your wake time a few minutes later to compensate.

The information on this page applies to the following models: HF3445/40 .

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