Chipset (main chip model) Huiding GR5515GGBD Memory body storage capacity (ROM+RAM) 1Mb ROM+256 Kb RAM LIS2DW12 for G-Sensor ST Bluetooth Version 5.1 MobileAPP GPS (supports APP side GPS data) is Heart rate sensor model: Huiding GH3026 Battery Type Polymer Battery Operating temperature range -20-50 Battery Capacity: Approximately 17.5 mah Charging time 1 hour Theoretical standby time: 10-15 days Normal using time 4-6 days Charging Software Function&App Compatibility supports Android 5.0 and above versions; Apple iOS 10.0 and above Compatibility Software working with Nova Ring Device side software functions Operation: The ring has no touch or buttons; App initiates motion and functional testing APP software functions Module remarks Exercise distance/calories/daily step count/7-day goal achievement/effective activity volume, etc There are a total of 24 Multiports modes, including 19 regular sports and 5 GPS sports Heart 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 data Sleep sleep data statistics, sleep proportion, sleep score, sleep analysis, average sleep heart rate, etc Blood oxygen app initiates blood oxygen testing/recent 7 blood oxygen data/recent 7 blood oxygen saturation measurement trends/blood oxygen history data Heart rate variability (HRV) APP initiates HRV testing/Last 7 HRV data/Average HRV/Stress history data during sleep Stress APP initiates stress testing/trend of the last 7 pressure measurements/historical pressure data Other settings (Others) unit format, sedentary reminder, low battery reminder, heart rate warning WeChat Sports/Apple Health (WeChat&Apple) Access WeChat Sports and Apple Health APP multi language support for multiple languages Short Screen for our APP: Support OTA (OTA upgrade): Supports Fota upgrade APP name for IOS&Android Android and iOS Market APP Download Search Name: Nova Ring APP QR Cord Packing information Packaging list: Ring, Color Box, Quick Guide, Charging Cable Body material: titanium alloy+resin