Jetlag Optics Flash Light Therapy - Body Clock Circadian Rhythm Modification 2016 STANFORD UNIVERSITY STUDY - Latest research, "Temporal integration of light flashes by the human circadian system", has shown that exposure to brief millisecond flashes of light while subjects are asleep is highly effective at shifting the body-clock or circadian rhythm WHAT DOES IT DO? Based on the study, exposure to this particular light protocol delays the onset of sleepiness by 2 hours the following day. The millisecond flashes while you are asleep activates photoreceptors in the eyes that are highly primed to light because of the complete darkness. This allows even brief flashes of light through the eyelids to have a dramatic effect on changing the body clock without waking you up or you even noticing that the flashes are going off. FUNCTIONALITY - This device connects to your phone through the headphone jack and works with the provided Android App. When the Start button is pressed, a 1:45 hour countdown begins. At the end of which, the device starts flashing once every 8 seconds for 1:15 minutes, before turning off. DESIGN - Based on a modular design, the 3 individual flash modules each have their own batteries that last for more than 10 uses before needing to be recharged. The suction cup on the base allows you to place the device in the more effective position depending on your sleeping position. 30 DAY MONEY-BACK GUARANTEE - If you are unsatisfied with your product in any way, simply return it to us for a full refund of your purchase price.