1. CONVENIENT DESIGN: Made of high strength stainless steel, sturdy and elegant, with a built in charging compartment for easy charging and storage on the go.2. COMFORTABLE WEAR: Lightweight design with a body weight of only about 5g, providing a comfortable and barely noticeable wearing experience.3. HEALTH MONITORING: Monitors various health data such as sleep, body temperature, and steps, allowing you to observe your health state at any time.4. FITNESS COMPANION: Records your daily steps and serves as a fitness tracking tool to help you achieve your exercise goals, thus promoting a healthier life style.5. SLEEP DETECTION: Tracks your sleep time, sleep quality, and sleep status to provide insights into your overall sleep health, giving you comprehensive and efficient test data.Specification:Item Type: Smart RingMaterial: Stainless Steel, Electronic Components, ABSRing Battery Type: (with built in battery for delivery)Ring Battery Capacity: 18mahRing Battery Life: 3-5 days approximatelyRing Charging Time: 60 minutesCharging Case Battery Type: (with built in battery for delivery)Charging Case Battery Capacity: 400mahHow to Use:Download the Ring APP after receiving the product. After downloading, you can connect and use the ring. Ring startup method: self start when fully chargedPackage List:1 x Smart Ring1 x Charging Case1 x Charging Cable1 x User Manual