Wellue O2Ring Continuous Finger Oxygen Monitor — Bluetooth Pulse Oximeter with Vibration Reminder, Free PC & App Reports — Wearable for Athlete/Fitness

Compact continuous oximeter designed for active users and overnight monitoring. Accuracy is maintained within 2% thanks to a CE certified smart SOC chip. One-button start enables continuous measurement as soon as the ring is worn, and the device runs automatically when worn. The rechargeable battery lasts up to 16 hours on a full charge. Comfort and fit: made from soft silicone for comfortable all-night wear. Suitable for most adults with a wearing circumference of 2.0 inches to 3.2 inches and weighs only 15 grams. Connectivity and storage: Bluetooth links the ring to the free APP and PC software, providing real-time display, graphical reports and trend analysis. Built-in memory stores 4 sets of data totaling 10 hours on the device; when connected, data is automatically uploaded to the APP. Reports can be exported and shared without limits as PDF or CSV files. Alerts and reporting: vibration reminder notifies you of events. The system flags abnormal readings—reports are marked if SpO2 falls below a preset threshold or if heart rate is below or above a preset threshold. Includes free APP and PC software for detailed reporting and data review. NOTE: This device is for sports and aviation use only.