Feature:1. SLEEP TESTING: Track and analyze your sleep quality with this smart ring. Get insights into your sleep patterns, including duration, deep sleep. Improve your sleep habits and wake up feeling refreshed.2. MULTIPLE FUNCTIONS: Monitor your daily activities and follow your steps, calories burned, and distance walked. Set fitness goals and receive real time feedback to help you stay motivated. Plan your workouts effectively for better results.3. APP DATA RECORDING: You can view and record your exercise data on the APP, view the map path tracking and detailed exercise data to know more about your past exercise details, breakthrough your own limit!4. WATERPROOF AND DURABLE: Made of titanium steel, this smart ring is waterproof with an IP68 rating. Wear it while swimming, showering, or exercising without worrying about damage. Its durable construction ensures long lasting usage.5. COMPACT AND STYLISH: Unlike bulky smartwatches, smart rings offer the same technology in a stylish and compact design that matches your style, and highlights your outstanding taste and personality.Specification:Item Type: Smart RingMaterial: Titanium SteelRing Battery Type: Cobalt Polymer Battery (Shipped with Built in Battery)Ring Battery Capacity: 17.5mAhCharging Time: 2 hoursStandby Time: 10-15 daysUsage Time: 7-9 daysThickness: Approx. 3mm / 0.12in thick.Package List:1 x Smart Ring1 x User Manual1 x Charging Cable