SR09 Blood Oxygen Heart Rate Health Monitor Smart Ring Sports Tracker Ring with Charging Case - Bright Black/Size 9 •【Comprehensive Health Monitoring】Track sleep patterns,blood oxygen levels,and heart rate with precision using advanced sensors for a complete overview of your health •【Sleek and Durable Design】Crafted from stainless steel with a resin-infused finish,this smart ring combines style with durability in a slim 2.5mm profile •【Multisport Functionality】Support for various sport modes allows you to track your activities and performance across different exercises •【Smart Gesture Control】Effortlessly browse TikTok,control video playback,and even take photos with simple hand gestures,enhancing your digital interaction •【Wide Compatibility】Works seamlessly with Android 9.0+ and iOS 10.0+,integrating with WeChat Sports and for Apple Health for comprehensive fitness tracking Specifications: •Material: stainless steel + resin encapsulation process •Size: 8 (inner diameter 18.2mm), 9 (inner diameter 19.0mm), 10 (inner diameter 19.9mm), 11 (inner diameter 20.7mm), 12 (inner diameter 21.5mm) •Thickness: 2.5mm •Weight: about 2.4g •Chipset: German Dialog DA14531,ultra-low power consumption •Memory: 144kb ROM + 48Kb RAM •G-Sensor: SC7A20 •Bluetooth Version: 5.1 •MobileAPP-GPS: Yes •Heart rate sensor: HX 3918 •Battery Type: polymer pure cobalt battery •Operating temperature range: 0-50℃ •Ring battery Capacity: 16mAh •Charging case battery Capacity: 200mAh •Charging time: 2 hours •Theory Standby time: 10 days-15 days •Normal using time: 7 days-9 days •Charging method: charging case •Compability: supports Android 9.0 and above; for IOS 10.0 and above •Operation: the ring has no touch and no buttons; the App initiates exercise and function test •Multi-sports mode: support •Heart rate: APP initiates heart rate test/all-day dynamic heart rate trend and data analysis/heart rate data analysis/recent 7 heart rate measurement trends/heart rate history data •Sleep: sleep data statistics,sleep ratio,sleep score,sleep analysis,average sleep heart rate,etc. •Blood oxygen: APP initiates blood oxygen test/recent 7 blood oxygen data/recent 7 blood oxygen saturation measurement trends/blood oxygen history data •Gesture browsing TikTok: support •Gesture taking photo: support •WeChat Sports/for Apple Health: support •APP: Jring Package included: •1 x Smart Ring •1 x Charging Case •1 x Charging Cable •1 x English User Manual