Philip Stein Natural Frequency Technology Classic Round Large Model 42F A beautiful Philip Stein large timepiece from our Classic Collection ,Natural Frequency Technology disc works to deliver powerful health and wellness benefits, like improved focus, more energy and lower stress levels. These natural sleep devices are clinically proven to help wearers fall asleep faster, sleep more profoundly, and wake up feeling refreshed. The latest study on the benefits of our Natural Frequency Watches was conducted by Jacksonville University and published in the international, peer-reviewed journal, Brain and Behavior. THE STUDY INDICATES A STATISTICALLY SIGNIFICANT IMPROVEMENT IN: Perceived Stress Cognitive Functions Overall Sleep Quality Food Cravings All this information above was copied from Philip Stein Natural Frequency Technology . this watch designer developer and manufactory.