"My watch kept alerting me that my heart rate was in the danger numbers. I went to my cardiologist and I'm thrilled to have my Spade watch." - Wanda S. Your heart doesn't take days off. Neither should your health monitoring. The Health Smartwatch 4 gives you 24/7 heart rate tracking, oxygen saturation monitoring, and sleep insights—all on your wrist. With 10 day battery life, you can count on continuous protection without daily charging hassles. Track your steps, monitor your sleep, stay connect