Delta M+ Light uses patented multi-frequency lighting technology, so that human eyes are not disturbed but are actually stimulated by the 40 Hz flickering light frequency while reading comfortably and improving brain function. Authoritative experimental results have confirmed that subjects receiving 40Hz light stimulation noninvasive audio-visual treatment over a six-month period exhibited a significant 83% slowing in the rate of decline in memory and cognition, as well as a reduction in brain atrophy and volumetric loss.
*Source https://news.gbimonthly.com/tw/article/show.php?num=37200

Delta 40 Hz light therapy with bright color LED protects your eyes and brain!