Wellue O2Ring Continuously Tracking Sp-02 Level and Heart Rate

Description

Brand new below retail price!! Retail price is 2.99, BOOOOO!!! My price? 0.99!!!. FREE Shipping!! Only to the lower 48, sorry.
From the manufacturer:
Wellue O2Ring Wearable Sleep Monitor - Bluetooth Tracker with Free APP & PC Report
Supported Application
Sleep Monitor, Heart Rate Monitor
Brand
Wellue
Wireless Communication Standard
Bluetooth
Compatible Devices
Smartphones, Desktops
Battery Cell Composition
Lithium Polymer
About this item
COMFORTABLE SOFT RING SENSOR: The lightest, smallest ring sensor for overnight continuous monitoring, durable and adapt to most fingers.
PROFESSIONAL APP & PC REPORT: Free APP & PC software provides graphic sleep report and trends of data, reviewing real-time data in APP dashboard. Unlimited sharing of PDF and CSV reports.
ABNORMAL DATA MARKING: If the Sp-O2 level is lower than the preset threshold and heart rate is lower or higher than the preset threshold, the device will tell you and 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: This device is for Sports and Aviation use only.