Vring-3 Frosted Bluetooth Sleep Health Monitoring Smart Ring Stainless Steel Finger Ring, with Charging Case - Gold/Size 12 Smart chips: With powerful computing power and floating-point arithmetic technology, it achieves faster running speed, higher security, and longer transmission distance Sleep monitoring: When you fall asleep, the ring automatically monitors your sleep quality and generates a sleep report to help you develop good sleep habits Heart rate monitoring: Through the combination of photoelectric sensors, accelerometers, optical heart rate sensors, optical blood oxygen sensors, and multiple sensors run synchronously Blood oxygen monitoring: The high-precision optical blood oxygen sensor can monitor the blood oxygen value by emitting red light and infrared light, and turn on all-weather blood oxygen monitoring Exercise monitoring: You can set a daily exercise goal, 5000-10000 steps, record steps, kilometers and calories at any time, apply different sports modes and open the exercise track on the APP at the same time, record the movement track of each time IP68 waterproof: There is no need to take off in washing, showering, swimming and other wading scenes, and it is not affected by sweat, and the physical condition under sleep and activity is continuously monitored Specifications: Waterproof IP68 Material Case: stainless steel Size 8(Inner diameter 18.2mm) 9(Inside diameter 19.0mm) 10(Inside diameter 19.9mm) 11(Inside diameter 20.7mm) 12(Inside diameter 21.5mm)Thickness 2.6mm Weight 2.9g Chipset AB2026B3 Memory (ROM+RAM) ROM 120M, RAM 64KB G-Sensor SC7A20H Bluetooth Version 5.2 MobileAPP-GPS Yes Heart rate sensor HX3918 Battery Type Polymer battery Operating temperature range 0-50 Battery Capacity 18mAh Charging time 1H Theory Standby time 10 days -15 days Normal using time 3 days 5 days Charging method Charging case Software Function and App Compatibility Support Android 5.0 and above; for Apple IOS 10.0 or later Compatibility Software working with Da Rings Device software functions Operation Ring no touch, no button; App launch movement and function test APP software functions module remark Activity Distance/calories/daily steps statistics / 7-day goal achievement/effective activity, etc Multisports There are 24 kinds in total: 19 kinds of regular sports +5 kinds of GPS sports Heart rate APP launches heart rate test/all-day dynamic heart rate trend and data analysis/heart rate data analysis/Recent 7 heart rate measurement trend/heart rate history data Sleep Sleep data statistics, sleep proportion, sleep score, sleep analysis, average sleep heart rate, etc Blood oxygen APP initiated blood oxygen test/recent 7 blood oxygen data/Recent 7 blood oxygen saturation measurement trend/historical blood oxygen data HRV APP initiated HRV test/nearly 7 HRV data/average HRV during sleep/stress history data Stress APP initiated blood oxygen test/Nearly 7 pressure measurement trends/pressure history data Others Unit format, sedentary reminder, low battery reminder, heart rate warning WeChat and for Apple Access WeChat Sports and for Apple Health APP multi-Language support Multiple languages Support OTA Supports Fota upgrades APP Da Rings Package included: 1 x Smart Ring 1 x Charging Case 1 x English User Manual Package included: 1 x Smart Ring 1 x Charging Case 1 x English User Manual