Product name: Smart Ring Charging Box Battery capacity: 200mA Features: 1. Multiple data health monitoring. APP displays monitoring data in real time 2. IPX8 dust and water resistant. Stylish lanyard is compact and portable 3. Portable storage, built-in battery Function: 1. Multi-sports mode. Record sports, walking, running, cycling, mountain climbing, swimming and other modes... Automatically identify your sports mode 2. Blood oxygen monitoring. Easily measure blood oxygen as you like. Blood oxygen saturation is one of the important indicators of heart health. The new optical sensor detects blood oxygen in real time and quickly to prevent sudden diseases such as cardiopulmonary disease 3. Sleep monitoring records complete sleep structure. Understand your own sleep status, light sleep, and deep sleep during the entire sleep period. Good sleep habits will lead to better health. 4. Large-capacity battery for longer battery life Equipped with a large-capacity battery, 9 days of standby, and a new low-power mode. After turning on the low-power mode, your commonly used health functions still support manual measurement, and your favorite sports can also be manually turned on for recording, with longer battery life and sufficient functions! Product weight: 30g Appearance size: 50*50*20cm Color: black, white Includes: 1pcs