1. Multifunctional Smart Ring, Blood Oxygen Monitoring; Heart Rate Monitoring; Sleep Monitoring; Step Counting; 10-Day Long Battery Life; Light And To Wear; Ip68 Waterproof; Camera Control; Multi-Sport Mode 2. Thin And Comfortable To Wear 3. New Smart Ring, On The Ring, All-Weather Intelligent Monitoring, Integrating Health Into Your , Multi-Dimensional Health Monitoring, Life Is Endless, Exploration Is Endless 4. Ultra-Low Power Consumption, Longer Lasting, And Smoother Use. The Ring Chip Uses German Dialog DA14531 To Bring You Excellent Performance And Efficient Smart Experience. The Smart Ring Injects A Powerful Core To Make Every Interaction Smoother. 5. Faster Charging And Longer Battery Life. It Uses A 17.5mAh Capacity Polymer Battery And Can Be Fully Once With The Charging Compartment. It Can Stand By For About 60 Days, Which Greatly Improves The Battery Life Of The Ring.<br><br>Description: 1. Size: Inner Diameter Approximately 21.5mm 2. Main Chip Model: German Dialog DA14531; Ultra-Low Power Consumption, More 3. Body Storage Capacity (ROM + RAM): 128KB ROM + 96 KB RAM 4.Battery Type: Polymer Pure Cobalt Battery 5. Working Temperature: 0~50 6. Charging Time: 2 Hours 7.Theoretical Standby Time: 10 Days-15 Days 8.Usage Time: -9 Days 9. Operation Definition: The Ring Has No Touch Or Buttons; The App Initiates Exercise And Functional Testing Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Silver Material:Stainless Steel<br><br>Package Contents: 1x Smart Ring 1x Charging Cable 1x Charging Compartment 1x English Manual<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.