Wellue O2ring Pulse Oximeter Sleep Oxygen Monitoring with Vibration APP For Android and iOS Bluetooth Heart Rate Oxygen Monitor

COMFORTABLE SOFT RING SENSOR: The lightest, smallest ring sensor for continuous tracking, durable and adapt to most fingers.DETAILED APP & PC REPORT: Free APP & PC software provides graphic report and trends of data, reviewing real-time data in APP dashboard. Unlimited sharing of PDF and CSV reports.UNUSUAL DATA MARKING: If the SpO2 level is lower than the preset threshold and heart rate is lower or higher than the preset threshold, the device will mark it in the report.UNLIMITED STORAGE IN APP: When the device is connected to the APP via Bluetooth, the data will be uploaded automatically. The built-in memory can store 4 groups of 10 hours of data on device.RECHARGEABLE: The device runs automatically when you wear it, up to 16 hours for a full charge.NOTE: It's not a medical device. This device is for Sports and Aviation use only and not intended for medical use.It is suitable for customers with a finger perimeter of 2-3.2 inch, roughly the size of an adult's finger