Posted by a reviewer on Amazon

There are three different levels of lighting and these can be toggled through using the onoff button

Posted by a reviewer on Amazon

So far after only a few 3 sessions nothing much to report but it is only mid october so i will have to revise this review as the weeks go by

Posted by a reviewer on Amazon

This is the only let down with this light its very portable and to not be able to unleash it from the power socket is very frustrating

Posted by a reviewer on Amazon

I like to carry my old one which had an internal battery around the house with me which is far more difficult with this one because having to plug and unplug all the time is a pain

Posted by a reviewer on Amazon

In my experience philips make the most effective sad lights

Posted by a reviewer on Amazon

However they dont work for everybody try it for a couple of weeks before you decide one way or the other

Posted by a reviewer on Amazon

Minus points no internal battery

Posted by a reviewer on Amazon

Ive tried this for a couple of weeks now adjusting when i use it to my shift cycle although it doesnt account for shift work in the instructions i have made my own cycle up