Gadgets Wellue Oxylink Wireless Blood Oxygen Monitor with Audio Reminder in Free App October 26, 2020 FREE APP FOR iOS AND ANDROID: Unlimited storage in App Vihealth, viewing real-time blood oxygen & heart rate in App Dashboard. Connect the device with APP via Bluetooth.COMFORTABLE SOFT RING SENSOR: The lightest, smallest ring sensor for overnight continuous monitoring, durable and adapt to most fingers.AUDIO REMINDER IN APP DASHBOARD: The audio reminder in App Dashboard will be triggered when O2 level falls below the pre-set threshold. The reminder works only when your phone stayed in Dashboard and not locked.AUDIO REMINDER IN DEVICE: The audio reminder in device will be triggered when the O2 level falls below the pre-set threshold, prevent from a low-oxygen status. You can adjust the volumn and O2 threshold in APP.PROFESSIONAL REPORT: Easily share and check graphic report and trends of blood oxygen saturation, heart rate and body motion.