10,000 lux happy energy light therapy simulated natural sunlight full spectrum led lamp light box portable thin border design aluminum alloy material amzcool <p>the light therapy box upgrade version brings you the happy simulated natural sun light in the dark days of fall and winter, good for better rest and working. </p > <p>helping you feel more awake during the day and to fall asleep better at night. </p > <p>full spectrum light without flicker, no uv.</p > <p>mordern designed, blends seamlessly into your home or office, easy to carry and use.</p > <p><b>how to use</b><br> 1, put it on - place the light on the stand, and put it in a convenient location like on a desk or table top and turn it on.<br> 2, adjust it - find a comfortable distance which sould be facing to you, but you can't looking directly into it.<br> 3, start - adjust the brightness, we suggest using low brightness and about 10 minute at the first time you use.<br> </p > <p><b>usage duration depends on the distance; the closer you are to the light, the less time you should use it.</b></p >