【App Functions】The app manages data for multiple users and automatically saves readings. The app is compatible with iOS and Android. 【Data Storage & Sharing】Data records are stored in the ViHealth app and O2 Insight Pro software. Detailed reports can be generated and shared in PDF, CSV, or Binary format. 【72-Hour Runtime】Enjoy up to 72 hours of continuous tracking on a single charge. 【Customizable Notifications】Set your own ranges for oxygen and pulse; The device will beep or vibrate if a reading falls outside your set levels. 【Built-in Storage】Up to 4 recent 10-hour data sessions are stored directly on the oximeter. When linked to the app, all stored data is automatically transferred and saved. 【Comfort-fit Design】Includes a soft wristband and a patent-protected ring sensor for extended use. 【Intended Use】Designed for activities like sports, climbing, flight, and tracking your blood oxygen and pulse rate. NOTE: It's not a medical device. This device is for Sports and Aviation use only and not intended for medical use. It's not a medical device. This device is for Sports and Aviation use only and not intended for medical use.