Lucid is a smart sleep mask that creates personalized relaxing music based on your brainwaves. Whether it is to lull you into a nap or caress you into a full night's sleep, Lucid intelligently learns from your brain waves to produce music and sounds that are in harmony with your body's rhythm, helping you fall asleep better and faster. With different modes for Sleep, Power Nap, and Concentration, Lucid gives you in-depth analysis on your sleep patterns, and even helps you overcome common sleep issues.