Smart Ring for Monitor Fitness Sleep，Health Tracker Ring IP68 Waterproof Bluetooth Smart Heart Rate Monitor Ring Compatible for iOS & Android for Men Women (Rose Gold, 9#)

About this item 【Select Size】: Please measure carefully. The inner diameter of the smart ring must be larger than the thickest prescription of the finger joint to be worn normally. The smart ring has 4 sizes to choose from, inner diameter: 0.74-0.81inch (1 8.9mm-20.6mm). Please choose the appropriate size. 【Activity Fitness Tracker】: The fitness tracking ring records your exercise data and automatically monitors your heart rate and HRV every half hour, or manually through the app. Blood oxygen saturation and stress tests are measured manually via the app. 【Sleep Tracker】: Non-sensory sleep monitoring. When you fall asleep, the sleep tracking ring can automatically monitor your sleep quality and generate a sleep report to help you develop good sleep habits. Understand your own sleep state, the proportion of REM, light sleep, and deep sleep in the entire sleep period. Only good sleep habits will lead to better health. 【Stunning Design】: The outer ring of the smart ring is as warm as jade, and the inner ring is tough and durable. The stainless steel outer shell has been CNC polished tens of thousands of times for ultimate durability, while the smooth inner shell uses hypoallergenic epoxy resin; full-body IP68 waterproof technology meets your various waterproof needs. 【Magnetic Fast Charging】:The smart ring health tracker charges quickly, and has a 17mAh capacity polymer lithium battery with long battery life. The APP can check real-time power, and the mobile APP can check monitoring data in real time without any subscription fee. The smart ring supports Android 5.0 and iOS 10.0 and above systems.Support various languages Suitable for both men and women. › See more product details Product information Collapse All Expand All Connectivity Item details Style Compatibility Warranty & Support Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here. Product Warranty: For warranty information about this product, please click here Feedback Would you like to tell us about a lower price? Additional details Display Battery Measurements