Greetings, thank you for taking the time to ask us your question about the Samsung Galaxy Ring. The advertised Galaxy Ring is a discreet wearable that tracks your health and activity, providing insights into sleep, energy, heart rate, and workouts via the Samsung Health app, using sensors for heart rate, skin temp, SpO2, and motion. Its main functions include generating an "Energy Score" for daily readiness, detailed sleep analysis, step/activity tracking, and even automatic workout detection for walking/running. If you have additional questions for us, please do not hesitate to contact Support. Thanks for being a staunch Samsung customer. - Debra