Chipset (main chip model) Huiding GR5515GGBDMemory body storage capacity (ROM+RAM) 1Mb ROM+256 Kb RAMLIS2DW12 for G-Sensor STBluetooth Version 5.1MobileAPP GPS (supports APP side GPS data) isHeart rate sensor model: Huiding GH3026Battery Type Polymer BatteryOperating temperature range -20-50 Battery Capacity: Approximately 17.5 mahCharging time 1 hourTheoretical standby time: 10-15 daysNormal using time 4-6 daysChargingSoftware Function&AppCompatibility supports Android 5.0 and above versions; Apple iOS 10.0 and aboveCompatibility Software working with Nova RingDevice side software functionsOperation: The ring has no touch or buttons; App initiates motion and functional testingAPP software functionsModule remarksExercise distance/calories/daily step count/7-day goal achievement/effective activity volume, etcThere are a total of 24 Multiports modes, including 19 regular sports and 5 GPS sportsHeart rate APP initiates heart rate testing/All day dynamic heart rate trend and data analysis/Heart rate data analysis/Recent 7 heart rate measurement trends/Heart rate historical dataSleep sleep data statistics, sleep proportion, sleep score, sleep analysis, average sleep heart rate, etcBlood oxygen app initiates blood oxygen testing/recent 7 blood oxygen data/recent 7 blood oxygen saturation measurement trends/blood oxygen history dataHeart rate variability (HRV) APP initiates HRV testing/Last 7 HRV data/Average HRV/Stress history data during sleepStress APP initiates stress testing/trend of the last 7 pressure measurements/historical pressure dataOther settings (Others) unit format, sedentary reminder, low battery reminder, heart rate warningWeChat Sports/Apple Health (WeChat&Apple) Access WeChat Sports and Apple HealthAPP multi language support for multiple languagesShort Screen for our APP:Support OTA (OTA upgrade): Supports Fota upgradeAPP name for IOS&Android Android and iOS Market APP Download Search Name: Nova RingAPP QR CordPacking informationPackaging list: Ring, Color Box, Quick Guide, Charging CableBody material: titanium alloy+resin