QQYYLI Smart Ring - Heart Rate Temperature Monitoring 7 Day Battery Life

Software feature and app Compatibility: Supports Android 5.0 and above; iOS version 10.0 or higher App Software Features Activity: Distance/Calories/Steps Stats/7 Day Powerful Activity etc. Multisports: a total of 24 types: 19 types of conventional sports +5 types of GPS sports Heart rate: app starts heart rate test/dynamic heart rate trend and all-day data analysis/heart rate data analysis/recent 7 trends for heart rate measurements/historical heart rate data Sleep: Statistics on sleep data, sleep proportion, sleep score, sleep analysis, average sleep heart rate, etc. Blood oxygen: APP launched blood oxygen test/blood oxygen data from the last 7 times/blood oxygen saturation measurement trend of the last 7 times/blood oxygen history data HRV: APP launched HRV test/recent 7 HRV data/average HRV/stress history data during sleep Stress: APP launched stress test/pressure measurement trend of the last 7 times/ pressure history data Other: unit layout, sedentary reminder, low battery reminder, heart rate warning APP multilingual support:2 languages: English, Japanese Specifications Water resistance: IP67 Thickness: 3 mm Materials: titanium alloy Weight: 0.102 oz Colors: silver, brown, black, gold Chipset: Goodix GR5515GGBD Smart Ring Memory (ROM+RAM): 1 Mb + 256 KB G-sensor: ST LIS2DW12 Bluetooth version: 5.1 Mobile APP GPS: Yes Battery Type : Lithium Ion Polymer Battery Battery capacity: about 17.5 mAh Charging time Smart Ring: 1 hour Theoretical standby time: 10-15 days Normal use time: 4-7 days Charging: magnetic