Cellatti Smart Ring with Non-Invasive Blood Glucose & Sleep Apnea Detection. Cellatti rings up your body's most healthful messages - Sleep, Sleep Apnea, Blood Oxygen, Blood Glucose, Blood Pressure, Heart Rate, Heart Rate Variability, Resilience (balance of Stress & Recovery), Activity, Readiness, Skin & Body Temperature, Menstrual Cycle - to transform how you fee everyday. Chronic disease diagnosis device using Biometric information + PhotoPlethysmography?PPG?sensor + Artificial Neural Network?ANN?+ Big Data