The Smart Wearable Ring is a stylish and multifunctional device that helps you stay in tune with your health and well-being. It features advanced sensors that monitor your heart rate, stress levels, and activity levels, providing you with real-time insights into your overall health status. By tracking your heart rate continuously, you can understand how your body responds to exercise, stress, and various activities. The innovative Mood & Stress Detection feature allows you to identify patterns in your emotional state and develop effective stress management strategies. The built-in Activity Tracking feature motivates you to move more and sit less, helping you achieve your fitness goals and improve overall health. The ring's sleek and comfortable design complements your style, and it seamlessly syncs with your Android or iOS device to conveniently track your health data. Specifications Material: Steel + Ceramic Ring Size: No. 10 (20mm Diameter) Active Use: 2-3 Days Standby Time: 4 days Charging Time: 1.5 Hours Water Resistance: 5ATM Operating Temperature: -20°C to 50°C Compatibility: Android 5.0 and later, iOS 9.0 and later